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Alnus glutinosa (L.) Gaertn. (European black alder), catkins
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Acer palmatum (Japanese maple), leaves with fall color
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Achillea millefolium (yarrow), close-up of flowers
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Arnoglossum atriplicifolium (L.) H.Rob. (pale Indian-plantain), buds, stemStickney, William S.
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Berberis thunbergii ‘Atropurpurea Nana’ (Crimson Pygmy Japanese barberry), shrubBoland, Tim
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Abies sp. (fir), needles
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Quercus imbricaria (shingle oak), habit, winter
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Calla palustris L. (water arum), habit
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Juglans nigra (black walnut), pith
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Amelanchier xgrandiflora Rehder (apple serviceberry), form, habit
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Aesculus parviflora Walt. (bottlebrush buckeye), habit
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Aquilegia coerulea (Colorado columbine), botanical illustration
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Asclepias syriaca (common milkweed), umbel with flowers
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Aesculus L. (buckeye), inflorescences and leaves
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Aristolochia manshuriensis Komar. (Manchurian pipe vine), habit
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Aesculus hippocastanum L. (horse-chestnut), bud and stem
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Abeliophyllum distichum Nakai (white-forsythia), leaves
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Quercus alba (white oak), bark detail with signmarker
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Quercus alba (white oak), bud detail