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The Morton Arboretum Prairie Restoration SignDecember 12 1980
Armstrong, Patricia K.
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Andropogon gerardii Vitman (big bluestem), stalks
October 30 1980
Armstrong, Patricia K.
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Amaranthus powellii S.Wats. (Powell's amaranth), stalk with inflorescence June 1980
Dritz, Ken
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Aralia spinosa L. (devil’s walking stick, Angelica Tree, Hercules' Club, Prickly Ash, Prickly Elder) habitSeptember 1980
Kohout, Kitty
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Armoracia rusticana G.Gaertn., B.Mey. & Scherb. (horseradish), leaves, habitJune 1980
Dritz, Ken
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Asclepias hirtella (Pennell) Woodson (tall green milkweed), flowers and leaves on stemMay 1980
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Asclepias purpurascens L. (purple milkweed), close-up of flowers and budsApril 1980