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Article
The Characteristics Used in the "New Systematics" Approach to Classifying the Gramineae 1970
Coulter, Ronald M.
Map
Morton Arboretum, DuPage County, Illinois (topographic survey)circa 1970
Chicago Aerial Survey Co.
Photographic image
Anemone occidentalis S.Watson (white pasqueflower), close-up of flowerJune 23 1970
Coulter, Ronald M.
Photographic image
Aquilegia formosa Fisch. ex DC. (Western columbine), close-up of flowerJuly 10 1970
Coulter, Ronald M.