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Asclepias syriaca (common milkweed), close-up of split follicle with seeds and attached hairsKohout, Kitty
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Arisaema triphyllum (L.) Schott (Jack-in-the-pulpit), close-up of flowerhead Harcourt, R. M.
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Alnus glutinosa (L.) Gaertn. (European black alder), bark
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Quercus alba (white oak), bud detail
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Asarum canadense L. (wild-ginger), habit
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Apocynum androsaemifolium L. (spreading dogbane), flowers with stems and leavesComstock, R. J.
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Alliaria petiolata (Bieb.) Cavara & Grande (garlic-mustard), leaves and fruits
Stickney, William S.
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Betula pendula Roth (European white birch), catkins
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Anaphalis margaritacea (L.) Benth. & Hook.f. (pearly everlasting), close-up of flower headScott, Marion
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Arnoglossum plantagineum Raf. (prairie Indian-plantain), flowers and budsLamp, Herbert F.
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Bergenia crassifolia (L.) Fritsch. (leather bergenia), habit
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Actaea pachypoda Elliott (white baneberry), habit
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Anemone canadensis L., (Canada anemone), flowers with stem and leavesKohout, Kitty
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Betula nigra L. (river birch), habit
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Magnolia (magnolia), bud
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Asclepias meadii Torr. ex Gray (Mead's milkweed), flowers and leaves on stemsBowles, Marlin L.
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Amelanchier laevis Wiegand (Allegheny serviceberry), close-up of fruit, cross-section of fruit and seedsKohout, Kitty
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Acaena microphylla Hook. f. (red mountain bidi-bidi) and Mazus reptans N. E. Br. (creeping mazus), habitMehaffey, Scott A.
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Arnoglossum atriplicifolium (L.) H.Rob. (pale Indian-plantain), buds, stem, leavesKohout, Kitty
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Asarum canadense L. (wild-ginger), habit
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Calla palustris L. (water arum), flower and leaves
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Abies balsamea (L.) Mill. (balsam fir), cone
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Juglans nigra (black walnut), twig