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Acer pensylvanicum (striped maple), twig and bud
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Arnoglossum plantagineum Raf. (prairie Indian-plantain), close-up of flowers and budsLamp, Herbert F.
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Anemone canadensis L. (Canada anemone), flowers, buds and, upper leavesShouba, Jack
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Acer saccharum (sugar maple), habit
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Aesculus parviflora Walt. (bottlebrush buckeye), flowers
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Asclepias tuberosa L. (butterfly weed), habit, flowers
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Aralia racemosa L. (American spikenard), leaves and fruit
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Abeliophyllum distichum Nakai (white-forsythia), branch, flowers
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Asarum canadense L. (wild-ginger), leaves
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Betula pendula Roth (European white birch), trunk
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Actaea pachypoda Elliott (white baneberry), inflorescence
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Quercus bicolor (swamp white oak), bare trees in flooded woodland
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Arisaema triphyllum (L.) Schott (Jack-in-the-pulpit), close-up of flowerhead Harcourt, R. M.
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Anaphalis margaritacea (L.) Benth. & Hook.f. (pearly everlasting), close-up of flower headScott, Marion
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Mahonia nervosa (Pursh) Nutt. (Cascades grape-holly), a few leaflets with insect damage, developing fruitsCoulter, Ronald M.
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Calla palustris L. (water arum), flower and leaves
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Acer saccharum (sugar maple), fall color, habit
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Carya ovata (shagbark hickory), unfolding bud
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Asarum canadense L. (wild-ginger), habit
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Alnus glutinosa (L.) Gaertn. (European black alder), close-up of fruits
Danielson, Donna
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Betula pendula Roth (European white birch), habit, habitat
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Arethusa bulbosa L. (dragon's mouth orchid), flower
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Abies balsamea (L.) Mill. (balsam fir), buds
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Amorpha canescens Pursh (leadplant), inflorescence and leaves
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Antennaria neglecta Greene (cat's foot), habit
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Abies concolor (Hook.) Nutt. (white fir), branch habit