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Amaranthus powellii S.Wats. (Powell's amaranth), close-up of inflorescenceSeptember 1978
Dritz, Ken
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Amaranthus powellii S.Wats. (Powell's amaranth), stalk with inflorescence June 1980
Dritz, Ken
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Arabis hirsuta (L.) Scop. var. glabrata Torr. & A. Gray (mountain rock cress), habitJune 1978
Dritz, Ken
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Aralia elata (Miq.) Seem. (Japanese angelica tree), close-up of flowers, inflorescenceAugust 1981
Dritz, Ken
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Aralia elata (Miq.) Seem. (Japanese angelica tree), branches with leaves and flowersSeptember 1981
Dritz, Ken
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Neobeckia aquatica (Eaton) Greene (lakecress), close-up of flowersJune 1978
Dritz, Ken
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Armoracia rusticana G.Gaertn., B.Mey. & Scherb. (horseradish), leaves, habitJune 1980
Dritz, Ken
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Aronia melanocarpa (Michx.) Elliott (black chokeberry), growing habitJune 1978
Dritz, Ken
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Aronia prunifolia (Marsh.) Rehd. (purple chokeberry), close-up of flowersJune 1979
Dritz, Ken
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Asplenium platyneuron L. (Ebony Spleenwort), close-up of frond with sori (spores)July 1979
Dritz, Ken
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Symphyotrichum dumosum (L.) G.L. Nesom (bushy aster), habitDecember 1980
Dritz, Ken
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Symphyotrichum dumosum (L.) G.L.Nesom (bushy aster), close-up of flowersDecember 1980
Dritz, Ken
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Symphyotrichum ciliatum (Ledeb.) G.L.Nesom (rayless aster), close-up of flower budNovember 1980
Dritz, Ken
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Symphyotrichum boreale (Torr. & A. Gray) A. Löve & D. Löve (Northern bog aster), flower on stemMay 1985
Dritz, Ken
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Symphyotrichum boreale (Torr. & A. Gray) A. Löve & D. Löve (Northern bog aster), close-up of single flowerSeptember 1979
Dritz, Ken
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Ionactis linariifolia (L.) Greene (flax-leaved white-topped aster), habitDecember 1980
Dritz, Ken
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Symphyotrichum praealtum (Poir.) G.L. Nesom (willow aster), habitDecember 1980
Dritz, Ken
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Symphyotrichum firmum (Nees) G.L. Nelson (glossy leaved aster), habitDecember 1980
Dritz, Ken
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Symphyotrichum puniceum (L.) A. Love & D. Love (glossy-leaf aster), stem with flowersOctober 1980
Dritz, Ken
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Symphyotrichum lanceolatum (Willd.) G.L. Nesom (panicled aster), habit October 1981
Dritz, Ken
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Athyrium filix-femina var. angustum (Willd.) G. Lawson (northern lady fern), close-up of frond undersideJuly 1978
Dritz, Ken
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Baptisia tinctoria (L.) R. Br. ex Ait. f. (yellow false indigo), several yellow flowersAugust 1984
Dritz, Ken