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Eryngium yuccifolium Michx. (rattlesnake master), habit July 7 1970
Armstrong, Patricia K.
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Schizachyrium scoparium (Michx.) Nash (little bluestem), seeds on stemsOctober 24 1970
Armstrong, Patricia K.
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Minuartia groenlandica (Retz.) Ostenf. (Greenland stitchwort), habit, habitat June 1970
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Arctostaphylos edmundsii J. T. Howell (Little sur manzanita), flowers and leaves
December 1970
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Arctostaphylos glauca Lindl. (bigberry manzanita), close-up of flowersDecember 1970
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Asclepias hirtella (Pennell) Woodson (tall green milkweed), flowers and flower budsOctober 1970
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Carduus nutans (Musk Thistle), habitat, habit, summerJuly 1970
Hedborn Jr., Edward A.
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Carduus nutans (Musk Thistle), habitat, habit, summerJuly 1970
Hedborn Jr., Edward A.
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Asclepias tuberosa L. (butterfly weed), close-up of yellow-orange flowers and budsOctober 1970
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Symphyotrichum sericeum (Vent.) G.L.Nesom (silky aster), habit
October 1970
Beasley, Michael
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Symphyotrichum sericeum (Vent.) G.L.Nesom (silky aster), close-up of flowerOctober 1970
Beasley, Michael
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Symphyotrichum sericeum (Vent.) G.L. Nesom (silky aster), habitOctober 1970
Beasley, Michael
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Symphyotrichum sericeum (Vent.) G.L. Nesom (silky aster), habit October 1970
Beasley, Michael
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Symphyotrichum sericeum (Vent.) G.L. Nesom (silky aster), flower on stemOctober 1970
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Symphyotrichum sericeum (Vent.) G.L. Nesom (silky aster), stems with flowersOctober 1970
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Symphyotrichum sericeum (Vent.) G.L. Nesom (silky aster), flowering habitOctober 1970
Article
River Birch, Betula nigra: Birch Family (Betulaceae)December 21 1969 – March 20 1970
Tyznik, Anthony