Contributors

Treelib would not be possible without the efforts of many contributors. We'd like to extend a personal thank you to everyone that continues to help make Treelib into the educational tool that it is today.

If you have photos that you're interested in contributing (we only take the best!) then please contact us.

Contributors are listed in alphabetical order.

• Andes, Mono

  Mono lives in Chile and hikes extensively in high elevation sites as well as exploring parks in many areas of the world. He is particularly known for excellence in documenting old growth monkey puzzle forests in Chile. He has a large online following of adventurous people.

  They've contributed to species Araucaria araucana, Chionanthus virginicus, Embothrium coccineum, Gaultheria mucronata, Luma apiculata, Mitraria coccinea, Nothofagus antarctica, Nothofagus dombeyi, Paraserianthes lophantha, Sequoia sempervirens, Sophora microphylla, Weinmannia trichosperma.

• Arboretum Wespelaar, the

  The Arboretum Wespelaar in Belgium has one of the most outstanding collections in Europe of plants personally gathered from all corners of the world, including special collections of cultivars such as Azaleas and many others. Staff at the Tree Library acknowledge your large contribution to the study and identification of trees through developing extensive identification keys for trees, and of close-up photography of distinguishing features.

  They've contributed to species Azalea Cultivars, Azalea Cultivars2.

• Argenberg, Vyacheslav

  They've contributed to species Cedrus libani, Olea europaea.

• Basset, Cedric

  Cedric is at Father Armand-David's Garden, Rue du Cherche-Midi, Paris, a well-known botanical garden with a long history of excellent plant research in China going back over 150 years. He also publishes his own website at: www.asianflora.com.

  They've contributed to species Camptotheca accuminata, Castanea henryi, Chaenomeles cathayensis, Chengiopanax sciadophylloides, Dipteronia sinensis, Exbucklandia populnea, Ilex aquifolium, Ilex chinensis, Keteleeria davidiana, Lindera aggregata, Lindera bezoin, Lindera rubronervia, Meliosma myriantha, Parrotia subaequalis, Salix magnifica, Stachyurus chinensis.

• Bayton, Ross

  Ross is a well-recognized botanist and gardener from the UK, currently residing in Washington State, USA. He has co-authored 5 publications on plants, such as: A Guide for Gardeners and Botanists; RHS Genealogy for Gardeners: Plant Families Explored & Explained. He also is an exceptional photographer of plants.

  They've contributed to species Abies koreana, Acradenia frankliniae, Alangium platanifolium, Araucaria columnaris, Araucaria cunninghamii, Athrotaxis cupressoides, Azara microphylla, Brachychiton discolor, Callicarpa bodinieri, Callistemon sieberi, Calycanthus chinensis, Camellia japonica, Castanea crenata, Chaenomeles cathayensis, Chrysolepis chrysophylla, Clethra acuminata, Convolvulus cneorum, Crinodendron hookerianum, Diospyros virginiana, Distylium racemosum, Fitzroya cupressoides, Fothergilla major, Juniperus deppeana, Kadsura japonica, Keteleeria evelyniana, Lithocarpus henryi, Metapanax davidii, Olearia ilicifolia, Ostrya carpinifolia, Picea meyeri, Picea pungens, Picea purpurea, Podocarpus salignus, Sassafras tzumi, Sorbus aria, Stewartia monadelpha, Taxus baccata.

• Beale, Colin

  Colin is a prolific photographer of trees at the Royal Botanical Garden Kew in London, UK. He has provided photos of many species in the Garden.

  They've contributed to species Acer cappadocicum, Callicarpa japonica, Calocedrus decurrens, Carpinus betulus, Carya ovata, Castanea sativa, Catalpa bignonioides, Cephalotaxus harringtonii, Cladrastis kentukea, Cotinus obovatus, Fitzroya cupressoides, ginkgo biloba, Gleditsia japonica, Gleditsia sinensis, Hippophae rhamnoides, Ilex aquifolium, Koelreuteria bipinnata, Laburnum alpinum, Lindera bezoin, Maclura pomifera, Morus nigra, Nothofagus antarctica, Ostrya virginiana, Paulownia kawakamii, Phellodendron amurense, Picea smithiana, Pinus bungeana, Pinus pinea, Pistacia chinensis, Pterocarya stenoptera, Pterocarya x rehderiana, Quercus rubra, Rhus chinensis, Zelkova schneideriana.

• Beetham, John

  John lives in Australia and contributes some exceptionally high quality photographs.

  They've contributed to species Laurus nobilis.

• Blowe, Joseph

  Joseph is at theforestprimeval and is an avid nature photographer and knowledgeable botanist from Bountiful, Utah, USA.

  They've contributed to species Chrysolepis chrysophylla, Cupressus arizonica, Cupressus bakeri, Diselma archeri, Picea breweriana, Pinus muricata, Thuja koraiensis.

• Bredow, Jurgen

  Jurgen is an active and well-recognized participant in online plant commmunities. Thanks for your support.

  They've contributed to species Berberis x stenophylla.

• Canada, Tree

  The author thanks CEO Danielle St-Aubin and Carol Burnup from Tree Canada in Ottawa, Ontario for their support over several years in developing the TreeLib.ca database.

• Canary, Emerald

  Emerald is an artist and graphic designer who has hiked extensively in the mountains of California. He has a website displaying high quality photos of trees of California, located at www.coniferous.site.

  They've contributed to species Abies amabilis, Araucaria bidwillii, Araucaria heterophylla, Calocedrus decurrens, Cupressus macrocarpa, Juniperus californica, Keteleeria evelyniana, Metasequoia glyptostroboides, Picea breweriana, Pinus attenuata, Pinus balfouriana, Pinus contorta, Pinus jeffreyi, Pinus lambertiana, Pinus monophylla, Pinus muricata, Sequoiadendron giganteum, Tsuga mertensiana.

• Chakya, Katy

  Katy is with Minnesota Wildflowers (www.minnesotawildflowers.info), a mission to educate Minnesotans about their native plants.

  They've contributed to species Juglans cinerea.

• Corbet, Niall

  Niall is an international traveler and accomplished photographer. He has photographed extensively in the Wanglang Nature Reserve in Minyang, Sichuan Province, China.

  They've contributed to species Picea purpurea.

• Cutler, Wendy

  Wendy has dedicated much personal time to supporting the University of British Columbia Botanical Garden's forums and providing a variety of other support, such contributing to the Vancouver Trees app. She also has been involved for many years with the Cherry Blossom Festival in Vancouver, collecting data for the festival map and contributing to the festival's book on cherries. Thank you on behalf of many people!

  They've contributed to species Acacia pravissima, Aralia elata, Araucaria araucana, Aronia melanocarpa, Cistus albidus, Cistus laurifolius, Citrus maxima, Citrus trifoliata, Clerodendrum quadriloculare, Clerodendrum trichotomum, Clethra alnifolia, Clethra barbinervis, Colutea x media, Cotoneaster bullatus, Cotoneaster frigidus, Cotoneaster glabratus, Cotoneaster horizontalis, Cotoneaster microphyllus, Cotoneaster rotundifolius, Cotoneaster salicifolius, Crataegus x grignonensis, Daphniphyllum macropodum, Decaisnea fargesii, Diospyros kaki, Drimys winteri, Ebenopsis ebano, Euphorbia antiquorum, Euphorbia punicea, Franklinia alatamaha, ginkgo biloba, Idesia polycarpa, Juglans ailantifolia, Laurus nobilis, Liriodendron chinense, Luma apiculata, Magnolia sprengeri, Meliosma veitchiorum, Melliodendron xylocarpum, Metapanax davidii, Neolitsea sericea, Nothofagus antarctica, Oxydendrum arboreum, Pinus patula, Ptelea trifoliata, Pterocarya fraxinifolia, Rehderodendron gongshanense, Rhus copallinum, Rosa sericea, Sorbus 'Joseph Rock', Staphylea pinnata, Tapiscia sinensis, Tetrapanax papyrifer, Wollemia nobilis, xChitalpa tashkentensis, Zenobia pulverulenta.

• Das, Amitava

  Amitava is from West Benegal, India and photographs extensively in his part of the world. He has contributed pictures of tea orchards.

  They've contributed to species Camellia sinensis.

• Davies, Mike

  British Columbia, Canada

  They've contributed to species Araucaria heterophylla.

• de Block, Rudd

  Rudd is an educator and excellent photographer living near Deventer in the Netherlands. He has the opportunity to visit many botanical gardens in Europe.

  They've contributed to species Camellia japonica, Citrus trifoliata, Crataegus orientalis, Crataegus pinnatifida, Paraserianthes lophantha, Rosa ecae, Rosa roxburghii, Sophora microphylla.

• Descouens, Didier

  Dr. Didier Descouens is from the Institut Picot de Lapeyrouse, Muséum de Toulouse, Toulouse, France. Note his light box photographs of the paper mulberry plant.

  They've contributed to species Broussonetia papyrifera.

• de Spoelberch, Philippe

  Philippe de Spoelberch is President of the International Dendrology Society in London, UK. He donated the Arboretum Wespelaar in Belgium to the Foundation Arboretum Wespelaar. As an exceptional dendrologist, he has traveled extensively throughout the world for over 35 years, photographing and cataloging details of many species of trees, both conifers and deciduous, throughout Eurasia and the Americas. The list below is a partial list of the species to which he has contributed. Thank you for being an important partner in the website.

  They've contributed to species Abelia corymbosa, Abies alba, Abies amabilis, Abies borisii-regis, Abies bracteata, Abies cephalonica, Abies chensiensis, Abies concolor, Abies delavayi, Abies densa, Abies durangensis, Abies fabri, Abies fargesii, Abies firma, Abies forrestii, Abies fraseri, Abies gamblei, Abies grandis, Abies guatemalensis, Abies holophylla, Abies homolepis, Abies kawakamii, Abies koreana, Abies lasiocarpa, Abies magnifica, Abies mariesii, Abies nebrodensis, Abies nephrolepis, Abies nordmanniana, Abies numidica, Abies pindrow, Abies pinsapo, Abies procera, Abies recurvata, Abies sachalinensis, Abies sibirica, Abies spectabilis, Abies squamata, Abies veitchii, Acacia dealbata, Acer acuminatum, Acer argutum, Acer barbinerve, Acer buergerianum, Acer caesium, Acer calcaratum, Acer campbellii, Acer campestre, Acer capillipes, Acer cappadocicum, Acer carpinifolium, Acer caudatifolium, Acer circinatum, Acer crataegifolium, Acer davidii, Acer elegantulum, Acer erianthum, Acer grandidentatum, Acer griseum, Acer heldreichii, Acer henryi, Acer hyrcanum, Acer longipes, Acer mandshuricum, Acer maximowiczianum, Acer metcalfii, Acer micranthum, Acer miyabei, Acer monspessulanum, Acer morifolium, Acer negundo, Acer nipponicum, Acer oblongum, Acer oliverianum, Acer opalus, Acer palmatum, Acer paxii, Acer pectinatum, Acer pensylvanicum, Acer pentaphyllum, Acer pictum, Acer platanoides, Acer pseudoplatanus, Acer pseudosieboldianum, Acer pubipalmatum, Acer pycnanthum, Acer rubescens, Acer rubrum, Acer rufinerve, Acer sempervirens, Acer shirawasanum, Acer sieboldianum, Acer sikkimense, Acer sinopurpurescens, Acer spicatum, Acer stachyophyllum, Acer sterculiaceum, Acer tataricum, Acer tegmentosum, Acer tenellum, Acer triflorum, Acer truncatum, Acer tsinglingense, Acer tutcheri, Acer velutinum, Acer wuyuanense, Acer x conspicuum, Aesculus + dallimorei, Aesculus californica, Aesculus chinensis, Aesculus flava, Aesculus glabra, Aesculus indica, Aesculus parviflora, Aesculus pavia, Aesculus sylvatica, Aesculus x bushii, Aesculus x carnea, Aesculus x hemiacantha, Aesculus x hybrida, Aesculus x mutabilis, Ailanthus altissima, Akebia quinata, Alangium platanifolium, Albizia julibrissin, Alnus cordata, Alnus formosana, Alnus glutinosa, Alnus japonica, Alnus maximowiczii, Alnus nepalensis, Alnus rubra, Alnus sieboldiana, Alnus subcordata, Aphananthe aspera, Aralia bipinnata, Aralia chinensis, Araucaria araucana, Araucaria bidwillii, Araucaria heterophylla, Araucaria rulei, Arbutus andrachne, Arctostaphylos columbiana, Arctostaphylos nevadensis, Aronia melanocarpa, Asimina triloba, Asteranthera ovata, Athrotaxis cupressoides, Athrotaxis selaginoides, Aucuba himalaica, Austrocedrus chilensis, Azalea Cultivars, Azalea Cultivars2, Azara lanceolata, Berberis cretica, Berberis heteropoda, Berberis kawakamii, Betula albosinensis, Betula alleghaniensis, Betula chichibuensis, Betula chinensis, Betula cordifolia, Betula costata, Betula cylindrostachya, Betula dahurica, Betula delavayi, Betula maximowicziana, Betula nana, Betula nigra, Betula occidentalis, Betula pendula, Betula platyphylla, Betula pumila, Betula szechuanica, Betula tianschianica, Betula turkestanica, Betula utilis, Brachychiton discolor, Brachychiton populneus, Brachychiton rupestris, Bretschneidera sinensis, Broussonetia papyrifera, Buddleja fallowiana, Buddleja lindeyana, Calicotome villosa, Callicarpa americana, Callicarpa dichotoma, Callicarpa japonica, Callistemon citrinus, Calluna vulgaris, Calocedrus decurrens, Calycanthus x raulstonii, Camptotheca accuminata, Campylotropis polyantha, Carpinus betulus, Carpinus caroliniana, Carpinus cordata, Carpinus coreana, Carpinus fangiana, Carpinus henryana, Carpinus japonica, Carpinus kawakamii, Carpinus laxiflora, Carpinus orientalis, Carpinus polyneura, Carpinus pubescens, Carpinus shensiensis, Carpinus tschonoskii, Carya aquatica, Carya cordiformis, Carya glabra, Carya illinoinensis, Carya ovata, Castanea crenata, Castanea sativa, Castanopsis fissa, Catalpa bignonioides, Catalpa bungei, Catalpa fargesii, Catalpa ovata, Catalpa speciosa, Catalpa x erubescens, Cathaya argyrophylla, Cedrus atlantica, Cedrus brevifolia, Cedrus deodara, Cedrus libani, Celtis australis, Celtis biondii, Celtis bungeana, Celtis caucasica, Celtis choseniana, Celtis glabrata, Celtis jessoensis, Celtis koraiensis, Celtis occidentalis, Celtis sinensis, Celtis tenuifolia, Celtis tetrandra, Celtis tournefortii, Cephalanthus occidentalis, Cephalotaxus harringtonii, Cephalotaxus koreana, Ceratonia siliqua, Cercidiphyllum japonicum, Cercidiphyllum magnificum, Cercis canadensis, Cercis graffithii, Cercis occidentalis, Cercis siliquastrum, Chamaebatiaria millefolium, Chamaecyparis formosensis, Chamaecyparis lawsoniana, Chamaecyparis obtusa, Chamaecyparis thyoides, Chamaedaphne calyculata, Chengiopanax sciadophylloides, Chimonanthus praecox, Chionanthus retusus, Chionanthus virginicus, Cinnamomum camphora, Cistus albidus, Cistus creticus, Cistus ladanifer, Cistus laurifolius, Cistus monspeliensis, Cistus salvifolius, Cistus x hybridus, Cistus x purpureus, Cladrastis sinensis, Clematis 'Dawn', Clematis 'Multi Blue', Clematis 'Nelly Moser', Clematis akeboides, Clematis alpina, Clematis armandii, Clematis connata, Clematis flammula, Clematis montana, Clematis pogonanadra, Clematis potaninii, Clematis recta, Clematis tashiroi, Clerodendrum bungei, Clerodendrum trichotomum, Clethra acuminata, Clethra barbinervis, Clethra fargesii, Clethra monostachya, Colutea persica, Colutea porphyrogramma, Corylopsis glabrescens, Corylopsis pauciflora, Corylopsis sinensis, Corylopsis spicata, Corylus americana, Corylus avellana, Corylus chinensis, Corylus colurna, Corylus cornuta, Corylus fargesii, Corylus heterophylla, Corylus jacquemontii, Corylus sieboldiana, Cotoneaster ambiguus, Cotoneaster cochleatus, Cotoneaster frigidus, Cotoneaster horizontalis, Cotoneaster lacteus, Cotoneaster microphyllus, Cotoneaster moupinensis, Crataegus ashei, Crataegus macrantha, Crataegus monogyna, Crataegus orientalis, Crataegus phaenopyrum, Crataegus songarica, Crataegus turkestanica, Crataegus uniflora, Crataegus x grignonensis, Crataegus x vailiae, Cryptomeria japonica, Cunninghamia konishii, Cunninghamia lanceolata, Cupressus atlantica, Cupressus bakeri, Cupressus cashmeriana, Cupressus corneyana, Cupressus duclouxiana, Cupressus funebris, Cupressus gigantea, Cupressus goveniana, Cupressus macrocarpa, Cupressus nootkatensis, Cupressus sempervirens, Cupressus torulosa, Cyclocarya paliurus, Daphne bholua, Daphne feddei, Daphne genkwa, Daphne laureola, Daphne mezereum, Daphne tangutica, Daphniphyllum macropodum, Datisca cannabina, Delonix regia, Desmodium elegans, Deutzia calycosa, Deutzia gracilis, Deutzia longifolia, Deutzia setchuanensis, Diospyros cathayensis, Diospyros kaki, Diospyros lotus, Diospyros virginiana, Dipelta floribunda, Dipelta yunnanensis, Dipteronia sinensis, Disanthus cercidifolius, Discaria chacaye, Diselma archeri, Distylium myricoides, Distylium racemosum, Dodonea viscosa, Drimys winteri, Edgeworthia chrysantha, Ehretia acuminata, Ehretia dickensonii, Elaeagnus angustifolia, Elaeagnus umbellata, Embothrium coccineum, Emmenopterys henryi, Engelhardia spicata, Enkianthus chinensis, Enkianthus subsessillis, Erica arborea, Erica carnea, Erica scoparia, Erica tetralix, Erythrostemon gilliesii, Eucommia ulmoides, Euonymus alatus, Euonymus americanus, Euonymus atropurpureus, Euonymus bungeanus, Euonymus carnosus, Euonymus grandiflorus, Euonymus hamiltonianus, Euonymus japonicus, Euonymus myrianthus, Euonymus oxyphyllus, Euonymus planipes, Euphorbia mellifera, Euptelea pleiosperma, Euptelea polyandra, Exbucklandia populnea, Exochorda giraldii, Exochorda korolkowii, Exochorda racemosa, Exochorda serratifolia, Fagus crenata, Fagus engleriana, Fagus grandifolia, Fagus japonica, Fagus lucida, Fagus orientalis, Fitzroya cupressoides, Fontanesia phillyreoides, Fortunearia sinensis, Fothergilla major, Frangula alnus, Franklinia alatamaha, Fraxinus americana, Fraxinus angustifolia, Fraxinus chinensis, Fraxinus excelsior, Fraxinus floribunda, Fraxinus lanuginosa, Fraxinus mandshurica, Fraxinus ornus, Fraxinus pennsylvanica, Fraxinus platypoda, Fraxinus quadrangulata, Fraxinus sieboldiana, Fuchsia magellanica, Fuchsia paniculata, Gaultheria itoana, Gaultheria mucronata, Gaultheria repens, Gaultheria shallon, ginkgo biloba, Gleditsia sinensis, Glyptostrobus pensilis, Halesia carolina, Halesia diptera, Hamamelis japonica, Hamamelis mollis, Hamamelis ovalis, Hamamelis vernalis, Hamamelis virginiana, Hamamelis x intermedia, Hebe salicifolia, Hemiptelea davidii, Heptacodium miconioides, Holodiscus microphyllus, Hovenia dulcis, Hydrangea anomala, Hydrangea aspera, Hydrangea heteromalla, Hydrangea paniculata, Hydrangea serrata 'Accuminata', Idesia polycarpa, Ilex crenata, Ilex verticillata, Illicium anisatum, Illicium floridanum, Illicium henryii, Illicium simonsii, Indigofera amblyantha, Indigofera hancockii, Itea virginica, Jasminum humile, Juglans ailantifolia, Juglans cathayensis, Juglans cinerea, Juglans cinerea x ailantifolia, Juglans mandshurica, Juglans nigra, Juglans regia, Juniperus chinensis, Juniperus communis, Juniperus drupacea, Juniperus excelsa, Juniperus foetidissima, Juniperus occidentalis, Juniperus osteosperma, Juniperus oxycedrus, Juniperus phoenicea, Juniperus pseudosabina, Juniperus recurva, Juniperus rigida, Juniperus sabina, Juniperus scopulorum, Juniperus semiglobosa, Juniperus squamata, Juniperus tibetica, Juniperus virginiana, Kalmia angustifolia, Kalmia buxifolia, Kalmia latifolia, Kalmia polifolia, Kalopanax septemlobus, Keteleeria evelyniana, Koelreuteria bipinnata, Koelreuteria paniculata, Kolkwitzia amabilis, Laburnum alpinum, Lagarostrobos franklinii, Lagerstroemia indica, Larix decidua, Larix gmelinii, Larix griffithii, Larix kaempferi, Larix lyallii, Larix mastersiana, Larix occidentalis, Larix potaninii, Larix sibirica, Larix x eurolepis, Lavandula stoechas, Leitneria floridana, Leycesteria formosana, Ligustrum japonicum, Lindera aggregata, Lindera angustifolia, Lindera bezoin, Lindera chienii, Lindera erythrocarpa, Lindera obtusiloba, Lindera reflexa, Lindera rubronervia, Liquidambar acalycina, Liquidambar formosana, Liquidambar orientalis, Liquidambar styraciflua, Liriodendron chinense, Liriodendron tulipifera, Lithocarpus glaber, Lithocarpus henryi, Lithocarpus pachyphylla, Lithocarpus variolosus, Litsea kingii, Lomatia hirsuta, Lonicera etrusca, Lonicera hispida, Lonicera maackii, Lonicera quinquelocularis, Lonicera tatarica, Lonicera webbianum, Loranthus delavayi, Luma apiculata, Maackia amurensis, Machilus thunbergii, Maclura pomifera, Maclura tricuspidata, Magnolia obovata, Mahonia aquifolium, Mahonia japonica, Maytenus boaria, Meliosma cuneifolia, Meliosma myriantha, Meliosma pinnata, Meliosma simplicifolia, Meliosma veitchiorum, Menziesia ciliicalyx, Metasequoia glyptostroboides, Mitraria coccinea, Morus alba, Morus australis, Morus nigra, Myrceugenia exsucca, Myricaria germanica, Neoshirakia japonica, Nerium oleander, Nothofagus alpina, Nothofagus cunninghamii, Nothofagus dombeyi, Nothofagus gunnii, Nothofagus pumilo, Notholithocarpus densiflorus, Nyssa aquatica, Nyssa sinensis, Nyssa sylvatica, Oemleria cerasiformis, Osmanthus armatus, Osmanthus delavayi, Ostrya carpinifolia, Ostrya japonica, Ostrya virginiana, Ostryopsis davidiana, Parrotia persica, Parthenocissus quinquefolia, Paulownia 'Purple Splendor', Paulownia elongata, Paulownia fortunei, Phellodendron amurense, Phellodendron chinense, Phellodendron japonicum, Phellodendron lavallei, Philadelphus delavayi, Philadelphus × lemoinei 'Belle Etoile', Phillyrea angustifolia, Phillyrea latifolia, Phoebe formosana, Photinia beauverdiana var. notabilis, Photinia davidiana, Photinia niitakamensis, Photinia serratifolia, Photinia villosa, Phyllanthopsis phyllanthoides, Phyllanthus glaucus, Picea abies, Picea alcoquiana, Picea asperata, Picea brachytyla, Picea breweriana, Picea crassifolia, Picea engelmannii, Picea farreri, Picea glehnii, Picea jezoensis, Picea koraiensis, Picea koyamae, Picea likiangensis, Picea martinezii, Picea meyeri, Picea morrisonicola, Picea obovata, Picea omorika, Picea orientalis, Picea pungens, Picea purpurea, Picea rubens, Picea schrenkiana, Picea sitchensis, Picea smithiana, Picea torano, Picea wilsonii, Pieris formosa, Pieris japonica, Pinus albicaulis, Pinus aristata, Pinus armandii, Pinus attenuata, Pinus ayacahuite, Pinus balfouriana, Pinus brutia, Pinus bungeana, Pinus canariensis, Pinus coulteri, Pinus culminicola, Pinus densiflora, Pinus edulis, Pinus engelmannii, Pinus flexilis, Pinus halepensis, Pinus heldreichii, Pinus jeffreyi, Pinus koraiensis, Pinus kwangtungensis, Pinus lambertiana, Pinus longaeva, Pinus massoniana, Pinus monophylla, Pinus montezumae, Pinus monticola, Pinus mugo, Pinus muricata, Pinus nigra, Pinus palustris, Pinus parviflora, Pinus patula, Pinus peuce, Pinus pinaster, Pinus pinea, Pinus pseudostrobus, Pinus pumila, Pinus pungens, Pinus radiata, Pinus resinosa, Pinus rigida, Pinus roxburghii, Pinus sabiniana, Pinus sibirica, Pinus strobus, Pinus sylvestris, Pinus taiwanensis, Pinus thunbergii, Pinus virginiana, Pinus wallichiana, Pistacia atlantica, Pistacia chinensis, Pistacia terebinthus, Pistacia vera, Platanus occidentalis, Platanus orientalis, Platanus x acerifolia, Platycarya longipes, Platycarya strobilacea, Platycladus orientalis, Poliothyrsis sinensis, Polygala balansae, Polygala myrtifolia, Polyspora axillaris, Populus alba, Populus caspica, Populus deltoides, Populus lasiocarpa, Populus maximowiczii, Populus nigra, Populus rotundifolia, Populus talassica, Populus wilsonii, Populus x canadensis, Populus x canescens, Potentilla fruticosa, Prumnopitys andina, Prunus dulcis, Pseudolarix amabilis, Pseudopanax laetus, Pseudotsuga macrocarpa, Pseudotsuga menziesii var. glauca, Pseudotsuga menziesii var. menziesii, Pseudotsuga sinensis, Ptelea trifoliata, Pterocarya fraxinifolia, Pterocarya macroptera, Pterocarya stenoptera, Pterocarya x rehderiana, Pteroceltis tatarinowii, Pterostyrax corymbosus, Pterostyrax hispidus, Pterostyrax psilophyllus, Ptilostemon chamaepeuce, Punica granatum, Pyrus betulifolia, Pyrus calleryana, Pyrus communis, Pyrus pyrifolia, Pyrus salicifolia, Quercus acerifolia, Quercus acutissima, Quercus alba, Quercus bicolor, Quercus canariensis, Quercus castaneifolia, Quercus cerris, Quercus coccinea, Quercus ilex, Quercus mongolica, Quercus montana, Quercus myrsinifolia, Quercus nigra, Quercus oglethorpensis, Quercus palustris, Quercus pannosa, Quercus petraea, Quercus phellos, Quercus pontica, Quercus pubescens, Quercus pyrenaica, Quercus rysophylla, Quercus semecarpifolia, Quercus serrata, Quercus stellata, Quercus suber, Quercus tarokoensis, Quercus trojana, Quercus vaccinifolia, Quercus variabilis, Quercus velutina, Rhamnus alaternus, Rhamnus davurica, Rhododendron aberconwayi, Rhododendron adenogynum, Rhododendron albiflorum, Rhododendron albrechtii, Rhododendron amagianum, Rhododendron ambiguum, Rhododendron annae, Rhododendron anthopogon, Rhododendron anthosphaerum, Rhododendron benhallii, Rhus chinensis, Rhus copallinum, Rhus coriaria, Richea pandanifolia, Richea scoparia, Robinia viscosa, Rosa albertii, Rosa brunonii, Rosa canina, Rosa ecae, Rosa fetdschenkoana, Rosa kokanica, Rosa laevigata, Rosa moyesii, Rosa nanothamnus, Rosa roxburghii, Rosa sempervirens, Rosa sericea, Rosa sweginzowii, Sambucus adnata, Sambucus chinensis, Sambucus mexicana, Sambucus nigra, Sambucus racemosa, Sassafras albidum, Sassafras tzumi, Saxegothaea conspicua, Scheffleria taiwania, Schima wallichii, Schizophragma hydrangeoides, Sequoia sempervirens, Sinojackia xylocarpa, Skimmia japonica, Sophora davidii, Sorbus 'Joseph Rock', Sorbus 'Leonard Messel', Sorbus alnifolia, Sorbus americana, Sorbus aria, Sorbus aucuparia, Sorbus caloneura, Sorbus cashmiriana, Sorbus commixta, Sorbus domestica, Sorbus folgneri, Sorbus forrestii, Sorbus hemsleyi, Sorbus hybrida 'Gibbsii', Sorbus matsumurana, Sorbus megalocarpa, Sorbus meliosmifolia, Sorbus setshwanensis, Sorbus wilsoniana, Sorbus yuana, Spartium junceum, Stachyurus chinensis, Stachyurus himalaicus, Stachyurus praecox, Staehelina arborea, Staphylea colchica, Stewartia malacodendron, Stewartia monadelpha, Stewartia ovata, Stewartia pseudocamellia, Stewartia rostrata, Stewartia serrata, Stewartia sinensis, Stewartia x henryae, Styphnolobium japonicum, Styrax hemsleyanus, Sycopsis sinensis, Symplocos paniculata, Syringa komarowii, Syringa pubescens, Syringa reticulata, Syringa wolfii, Tabebuia rosea, Taiwania cryptomerioides, Tamarix ramosissima, Tasmannia lanceolata, Taxodium distichum, Taxodium distichum var. imbricarium, Taxodium mucronatum, Taxus baccata, Tetracentron sinense, Tetraclinis articulata, Tetradium daniellii, Tetradium glabrifolium, Tetrapanax papyrifer, Thuja koraiensis, Thuja standishii, Thujopsis dolabrata, Tilia americana, Tilia amurensis, Tilia chinensis, Tilia chingiana, Tilia cordata, Tilia endochrysea, Tilia henryana, Tilia intonsa, Tilia japonica, Tilia kiusiana, Tilia mandshurica, Tilia maximowicziana, Tilia miqueliana, Tilia mongolica, Tilia oliveri, Tilia platyphyllos, Tilia tomentosa, Toona sinensis, Torreya californica, Torreya grandis, Torreya nucifera, Torreya taxifolia, Toxicodendron succedaneum, Toxicodendron vernicifluum, Triadica sebifera, Tripterygium wilfordii, Trochodendron aralioides, Tsuga canadensis, Tsuga caroliniana, Tsuga chinensis, Tsuga diversifolia, Tsuga dumosa, Tsuga mertensiana, Tsuga sieboldii, Ulmus davidiana var. japonica, Ulmus glabra, Ulmus laevis, Ulmus parviflora, Vernicia montana, Viburnum betulifolium, Viburnum buddlejifolium, Viburnum cassinoides, Viburnum chingii, Viburnum nervosum, Viburnum opulus, Viburnum trilobum, Vitex agnus-castus, Wariona saharae, Weigela florida, Weinmannia trichosperma, Wigandia caracasana, Wisteria brachybotrys, Wisteria floribunda, Wisteria frutescens, Wisteria sinensis, Xanthoceras sorbifolium, Zanthoxylum ailanthioides, Zanthoxylum schinifolium, Zanthoxylum simulans, Zelkova abelicea, Zelkova carpinifolia, Zelkova schneideriana, Zelkova serrata, Zelkova sicula, Zelkova sinica.

• Dziuk, Peter M.

  Peter is with Minnesota Wildflowers (www.minnesotawildflowers.info), a mission to educate Minnesotans about their native plants. He has contributed close-up pictures of various aspects of trees.

  They've contributed to species Carpinus caroliniana, Celtis occidentalis, Elaeagnus angustifolia, Gymnocladus dioicus, Juglans cinerea.

• Earl, Chris

  Chris is the webmaster of the Gymnosperm Database, one of the most referenced websites in the world with respect to conifers.

  They've contributed to species Abies concolor, Pinus longaeva.

• England, Lanny

  Lanny England is the Manager of Park Planning and Forestry in the municipality of Coquitlam, British Columbia, Canada. He has been a strong supporter of the development and implementation of TreeLib.ca

• Enking, Leonora

  Australia

  They've contributed to species Buddleja davidii, Callistemon salignus, Callistemon viridiflorus, Chamaecyparis lawsoniana, Citrus x sinensis, Cupressus sempervirens.

• Evans, Pablo

  London, UK

  They've contributed to species Cedrus deodara.

• Fitz, Mike

  Mike4Trees

  They've contributed to species Acer glabrum, Acer grandidentatum.

• Forlonge, John

  John is a dedicated horticulturalist and plant photographer living in Australia. He used to be in charge of collections at the Royal Botanic Gardens, Sydney, and has collected plants in North Queensland, the Philippines, Sabah, Chile, Kenya, Zimbabwe, Lesotho and Costa Rica.

  They've contributed to species Araucaria columnaris, Araucaria heterophylla, Desmodium acanthocladum, Firmiana simplex, Liquidambar formosana.

• Friedman, William (Ned)

  Ned is the Arnold Professor of Organismic and Evolutionary Biology, Harvard University, and also is the Director of the Arnold Arboretum, Boston Mass, USA. As an outstanding photographer, he has kindly contributed various photographs from his large personal collection. Thanks, Ned, for your many inspiring close-ups.

  They've contributed to species Abelia chinensis, Acer griseum, Acer henryi, Acer micranthum, Acer pictum, Acer rubrum, Acer saccharinum, Alnus maximowiczii, Amorpha nana, Aralia californica, Broussonetia papyrifera, Callicarpa dichotoma, Carpinus betulus, Cephalotaxus sinensis, Cercis chinensis, Corylopsis glabrescens, Corylus chinensis, Corylus tibetica, Cotinus obovatus, Cyrilla racemiflora, Euptelea pleiosperma, Exochorda giraldii, Gleditsia caspica, Juglans ailantifolia, Kolkwitzia amabilis, Leitneria floridana, Nyssa sylvatica, Pseudolarix amabilis, Symplocos paniculata, Syringa pubescens, Tetradium daniellii, Trochodendron aralioides.

• Garin, Paco

  Paco is a botanist and photographer from Spain. He is a most prolific contributor of photos of a wide variety of species from all over Europe and describing species in detail in Spanish and in English. He is an authority on documenting the many species of oaks throughout Europe.

  They've contributed to species Abies alba, Abies nordmanniana, Abies pinsapo, Acacia baileyana, Acacia boormanii, Acacia pravissima, Acacia retinodes, Acacia rubida, Acacia terminalis, Acacia verticillata, Acer griseum, Acer paxii, Acer pectinatum, Acer pentaphyllum, Acer pictum, Acer tutcheri, Alangium platanifolium, Arbutus andrachne, Aristotelia chilensis, Aronia melanocarpa, Azara serrata, Berberis kawakamii, Callicarpa kwangtungensis, Callistemon citrinus, Calycanthus chinensis, Camptotheca accuminata, Carpinus caroliniana, Carpinus japonica, Carpinus tschonoskii, Castanea crenata, Castanea henryi, Castanea mollissima, Castanopsis cuspidata, Castanopsis fissa, Cathaya argyrophylla, Celtis tenuifolia, Cephalotaxus harringtonii, Ceratonia siliqua, Chionanthus virginicus, Cinnamomum camphora, Cinnamomum japonicum, Citrus trifoliata, Clethra acuminata, Clethra barbinervis, Clethra fargesii, Clethra monostachya, Convolvulus cneorum, Corylopsis platypetala, Corylus colurna, Cotoneaster frigidus, Cotoneaster lacteus, Cotoneaster rehderi, Crataegus orientalis, Crataegus x grignonensis, Crinodendron hookerianum, Cyrilla racemiflora, Davidia involucrata, Decaisnea fargesii, Diospyros kaki, Diospyros lotus, Dipteronia sinensis, Distylium myricoides, Distylium racemosum, Emmenopterys henryi, Erica scoparia, Eucommia ulmoides, Euonymus atropurpureus, Euptelea polyandra, Exochorda racemosa, Fagus engleriana, Fortunearia sinensis, Frangula alnus, Fraxinus lanuginosa, Fuchsia paniculata, Gleditsia sinensis, Hemiptelea davidii, Hippophae rhamnoides, Ilex aquifolium, Ilex chinensis, Keteleeria davidiana, Koelreuteria bipinnata, Ligustrum japonicum, Lindera aggregata, Lindera bezoin, Lindera rubronervia, Lithocarpus glaber, Lithocarpus henryi, Magnolia stellata, Maytenus boaria, Meliosma cuneifolia, Metapanax davidii, Myrceugenia exsucca, Neolitsea sericea, Nothofagus alpina, Nyssa sinensis, Olea europaea, Olearia ilicifolia, Osmanthus armatus, Ostryopsis davidiana, Parrotia subaequalis, Paulownia kawakamii, Podocarpus salignus, Populus yunnanensis, Prunus maackii, Pseudocydonia sinensis, Pteroceltis tatarinowii, Quercus dentata, Quercus ilex, Quercus suber, Robinia neomexicana, Sassafras tzumi, Saxegothaea conspicua, Sophora microphylla, Stachyurus chinensis, Stachyurus himalaicus, Stachyurus praecox, Staphylea colchica, Tapiscia sinensis, Taxus cuspidata, Tetracentron sinense, Toxicodendron succedaneum, Zanthoxylum schinifolium, Zelkova carpinifolia, Zelkova schneideriana, Zenobia pulverulenta.

• Gercens, Karl

  Karl is an educator and lecturer in horticulture with an extensive history in plants of the United States. His interesting website is at: http://karlgercens.com/

  They've contributed to species Acradenia frankliniae, Brachychiton populneus, Clerodendrum bungei, Clethra barbinervis, Clethra fargesii, Dodonea viscosa, Embothrium coccineum, Euonymus atropurpureus, Fuchsia paniculata, Keteleeria davidiana, Koelreuteria bipinnata, Ligustrum japonicum, Neoshirakia japonica, Osmanthus armatus, Parrotia subaequalis, Pinus monophylla, Stachyurus chinensis.

• Harms, Marlin

  Marlin is an outstanding photographer of wildlife and plants. He lives in California, USA

  They've contributed to species Acer grandidentatum, Pistacia chinensis.

• Japan, ashitaka

  Ashitaka lives in Japan.

  They've contributed to species Aesculus x carnea, Catalpa speciosa, Cornus florida, Corylus sieboldiana, Firmiana simplex, Kadsura japonica, Lindera praecox, Lithocarpus glaber, Machilus thunbergii, Olea europaea, Pistacia chinensis.

• Jaquish, Barry

  Barry is a research scientist at the Kalamalka Research Center in Vernon, British Columbia, Canada. He has provided useful background on members of the spruce genus and on tree improvement programs in North America.

• Johnston, John

  UK

  They've contributed to species Wollemia nobilis.

• Kemeny, Ron

  Ron is living in the UK and is a volunteer recorder for The Tree Register of Britain and Ireland, photographing identifying characteristics of species in botanical gardens parks throughout the UK, confirming ID and recording global positioning coordinates for The Tree Registry's database. Thanks for contributing your useful photographs of species and cultivars.

  They've contributed to species Abelia triflora, Acradenia frankliniae, Ficus religiosa, Gleditsia caspica, Hakea lissosperma, Juniperus deppeana, Olearia ilicifolia, Podocarpus salignus, Thuja occidentalis, Thuja plicata, Thujopsis dolabrata.

• Kesl, Michael

  Michael is a researcher at the Biological Library (Biolib.cz), in the Czech Republic.

  They've contributed to species Abies sachalinensis, Pinus jeffreyi.

• Kleinheider, Steve

  They've contributed to species Sequoiadendron giganteum.

• Lattimer, Quinn

  Quinn is an active traveler and an avid fan of hiking in the outdoors, including snowshoeing in parks in the winter time. He also takes excellent aerial photographs while flying.

  They've contributed to species Abies amabilis, Coffea arabica, Larix lyallii, Picea engelmannii, Picea sitchensis, Pinus contorta.

• Lavin, Matt

  Professor Lavin is on faculty at Montana State University, Bozeman, Montana, USA, teaching courses in plant systematic ecology and regional flora. He has perhaps the best set of photographs on the internet for learning about grasses, legumes and succulent plants of North America.

  They've contributed to species Amelanchier alnifolia, Chamaebatiaria millefolium, Elaeagnus angustifolia, Pinus albicaulis, Pinus aristata, Pinus balfouriana, Pinus contorta, Pinus flexilis, Populus balsamifera, Populus deltoides, Populus x canadensis, Ptelea trifoliata, Robinia neomexicana, Salix bebbiana, Salix fragilis, Salix scouleriana, Tamarix ramosissima.

• Manners, Malcolm

  Malcolm is professor of Horticulture at Florida Southwestern College, Lakeland, Florida. He travels widely with his students and is an authority in citrus crop horticulture as well as plants in south-eastern USA.

  They've contributed to species Citrus limon, Coffea arabica, Morus alba, Rosa roxburghii.

• Marrison, Dave

  Dave is a botanical horticulturist with a keen interest in an extensive range of plants in the southern hemisphere, particularly the flora of Tasmania and Australia. His collection of photos has been a good educational tool for us.

• Martin, Tim

  Tim Martin is from Madison, Alabama, USA, center of the region of the well-known loblolly pine plantations.

  They've contributed to species Pinus taeda, Pinus virginiana.

• Mayer, Bob

  They've contributed to species Picea asperata.

• Meades, Susan J.

  Susan is a botany specialist who has worked in a variety of roles throughout her career, including being adjunct professor of Botany for 10 years, to publishing many papers of vascular plans in Canada, to being a nomenclature biologist and now to developing NL-Flora (https://newfoundland-labradorflora.ca/). She has been a key supporter and contributor to The Tree Library.

  They've contributed to species Abies balsamea, Acer spicatum, Betula alleghaniensis, Betula cordifolia, Betula papyrifera, Cornus alternifolia, Cornus canadensis, Fraxinus nigra, Juniperus communis, Juniperus virginiana, Larix decidua, Larix kaempferi, Larix laricina, Picea glauca, Picea mariana, Picea rubens, Pinus banksiana, Pinus resinosa, Pinus strobus, Populus balsamifera, Populus grandidentata, Populus tremula, Populus tremuloides, Salix bebbiana, Salix fragilis, Taxus canadensis, Thuja occidentalis, Tsuga canadensis.

• Morefield, James

  Jim is a botanist with the Department of Conservation & Natural Resources, Nevada Natural Heritage Program, Carson City, Nevada, USA

  They've contributed to species Holodiscus microphyllus, Juniperus osteosperma, Pinus longaeva, Populus fremontii.

• Niebla, Sergio

  Russia

  They've contributed to species Taxodium mucronatum.

• Olszyk, David

  David is the president of the American Conifer Society (ACS) and has provided assistance with tours in the field to photograph species. Mr. Olszyk has an encyclopedic knowledge of conifer species of the world. He has worked with staff from The Tree Library to add some of its photos to the ACS database.

• Pangue, Lalo

  Lalo has contributed some of our most beautiful photographs of maples changing colors in the fall. Thanks!

  They've contributed to species Acer grandidentatum, Pinus contorta, Populus tremuloides, Pseudotsuga menziesii var. glauca.

• Parkin, Norm

  They've contributed to species Prunus dulcis.

• Pihlaviita, Kari

  Finland

  They've contributed to species Picea abies, Picea obovata.

• Raasakka, Kaisu

  Norway

  They've contributed to species Picea schrenkiana.

• Rae, Sandy

  A nature photographer in Scotland.

  They've contributed to species Pinus lambertiana.

• Reurink, Jan

  Jan is an authority and renowned photographer on Tibet and its culture and natural beauty. He has provided excellent photos of old growth trees in remote areas of Tibet.

  They've contributed to species Abies squamata, Picea brachytyla.

• Richards, F.D.

  F.D. has an excellent eye for photographing and a detailed knowledge about plants and their cultivars, from his home in Illinois in the U.S. Thanks for your great photos.

• Rockstein, Andy

  Germany

  They've contributed to species Alnus glutinosa, Euonymus europaeus, Euonymus japonicus, Gleditsia triacanthos, Robinia pseudoacacia.

• Rooney, Lliam

  Lliam is a botanical photographer, field botanist and recorder for the Kent Botanical Recording Group in association with the Botanical Society of the British Isles.

  They've contributed to species Berberis x stenophylla, Buddleja globosa, Carpinus betulus, Colutea arborescens, Hippophae rhamnoides.

• Rushbrooke, Ben

  They've contributed to species Podocarpus lawrencei.

• Russell, Edd

  Thailand

  They've contributed to species Citrus maxima.

• Sheila, Plantaholic

  Sheila is a well-known and appreciated botanist in the UK who has collected, documented and taught about many hundreds of species from around the world.

  They've contributed to species Arbutus unedo, Cercis canadensis, Cercis chinensis, Enkianthus campanulatus, Euonymus europaeus, Euonymus fortunei, Koelreuteria bipinnata, Maytenus boaria.

• Sim, Alfred

  Australia

  They've contributed to species Callistemon salignus, Wollemia nobilis.

• Starr, Forest and Kim

  Forest and Kim Starr contribute excellent photos from locations in Hawaii.

  They've contributed to species Brachychiton acerifolius, Cinnamomum camphora, Citrus x sinensis, Clerodendrum quadriloculare, Ligustrum japonicum, Moringa oleifera, Paraserianthes lophantha, Pinus patula, Rosa laevigata, Tamarindus indica.

• State University, California Polytechnic

  J. Reimer, M. Ritter, W. Mark and C. Stubler are at the School of Urban Forestry, working with the SelecTree plant database at California Polytechnic State University (Cal Poly) in San Luis Obispo, California. They have contributed to the exchanging of photos between TreeLib.ca and SelecTree to improve each other's collections.

  They've contributed to species Callistemon citrinus, Callistemon salignus, Eucalyptus pauciflora, Ficus religiosa, Juniperus californica, Nothofagus dombeyi, Pinus muricata, Pseudotsuga macrocarpa, Taxodium mucronatum.

• Stewart, Randy

  Randy is a horticulturalist in Baltimore, Maryland, USA. He has a passion for documenting many of the species he encounters in his work.

  They've contributed to species Cladrastis kentukea, Maackia chinensis.

• Tann, Jon

  John lives in Mullumbimby, Australia. He has an extensive background in photographing plants and insects of Australia.

  They've contributed to species Acacia pravissima, Acacia verticillata, Araucaria bidwillii, Araucaria cunninghamii, Araucaria heterophylla, Callistemon citrinus, Eucalyptus pauciflora, Eucalyptus rubida, Hakea lissosperma.

• Tolgyesi, Kata

  Kata photographs extensively in Budapest, Hungary in Europe.

  They've contributed to species Calycanthus chinensis, Chaenomeles cathayensis, Fontanesia phillyreoides, Maclura pomifera, Zelkova carpinifolia.

• TOMCAT, BEAR

  Thanks to John Johnson for the use of some of his pictures.

  They've contributed to species Wollemia nobilis, Zelkova carpinifolia.

• UBC, Botanical Garden

  The author especially thanks Douglas Justice, and as well, Daniel Mosquin, Egan Davis and Patrick Lewis at the University of British Columbia Botanical Garden in Vancouver, BC, Canada for their support and advice, and in giving me open access to the Garden for photographing many species, particularly from Asia. We have photographed over 700 species in the extensive collection, through all seasons.

  They've contributed to species Carrierea calycina, Cotoneaster ambiguus, Cotoneaster bullatus, Cotoneaster horizontalis, Cotoneaster integerrimus.

• UBC, Department of Urban Forestry

  The author thanks Professors Cecil Konijnendijk and Stephen Shepherd of the Urban Forestry Department at the University of British Columbia in Vancouver, B.C., Canada for their introductions, patient listening and enthusiastic support of The Tree Library through its many stages of development.

• UBC, Forestry Department

  The author extends his thanks to Professors Robert Guy and Sally Aitken in the Faculty of Forestry at the University of British Columbia, Vancouver, BC, Canada for their early connecting to various aspects of the Tree Library for their teaching programs, and for following it with me over the numerous years of development.

• Uchida, Akimoto

  Japan

  They've contributed to species Maackia amurensis.

• Vandusen, Botanical Garden

  The author thanks many of the staff and plant specialists at Vandusen Botanical Garden in Vancouver, BC, Canada for answering many of my questions over the past 6 years and for providing over 150 species to photograph in all seasons.

• Vervuen, Albert

  Albert is from Holland. He has dedicated himself for many years to taking amazing photographs of nature and posting them on his Flickr site.

  They've contributed to species Buddleja davidii, Magnolia kobus.

• Victoria, University of

  The author thanks Professors Patrick von Aderkas and Barbara Hawkins for their confidence and support regarding The Tree Library, and for using it as a teaching tool.

• Weisler, Jon

  John is an avid plant enthusiast and excellent photographer living in Nevada in the US. Thanks for contributing, John.

  They've contributed to species Holodiscus microphyllus.

• Wester, Laura

  Laura is from the Arboretum Wespelaar, Haacht-Wespelaar, Belgium. She has been instrumental in providing assistance to upgrade our collections of many species around the world. Arboretum Wespelaar is part of ArbNet, a worldwide network of arboreta from all over the world work together to preserve trees and tree collections. Thanks Laura, for the valuable contribution you have made to The Tree Library.

• Whitbread, Randy

  Randy lives in northern Manitoba in Canada and is well-known for taking high quality photographs of northern landscapes.

  They've contributed to species Cornus stolonifera, Picea glauca, Picea mariana, Pinus banksiana, Populus tremuloides, Prunus cerasifera, Salix alba.

• Willson, Eleanor

  Eleanor is an environmental consultant from University of British Columbia, Vancouver, B.C. She is most active in hiking and in traveling to do field work in fisheries and forestry in British Columbia.

  They've contributed to species Coffea arabica, Larix lyallii, Picea sitchensis, Pinus contorta, Pseudotsuga menziesii var. glauca, Sequoiadendron giganteum, Tsuga mertensiana, Zelkova serrata.

• Willson, Nathan

  Nathan is a highly skilled computer programmer living between Victoria, B.C. and Tokyo, Japan. He has devoted countless hours of his own time over 5 years developing all aspects of the website of The Tree Library. Our success would have been impossible without him. Thanks so much.

  They've contributed to species Cryptomeria japonica, Pseudotsuga menziesii var. menziesii, Salix 'Chrysocoma', Salix alba 'Vitellina'.

• Willson, Barbara

  Barbara is active in the outdoors, hiking and canoeing throughout British Columbia, the Yukon, Washington State, USA and Hawaii.

  They've contributed to species Abies lasiocarpa.

• Wilson, Stuart

  California, USA

  They've contributed to species Pistacia vera, Quercus coccinea.

• Wormley, Glynn

  UK

  They've contributed to species Cupressus sempervirens.

• Worrall, John

  Dr. John Worrall in his career was a well-known and respected professor of dendrology for many years at the Faculty of Forestry, University of British Columbia, Vancouver, B.C., Canada.

  They've contributed to species Abies bracteata.