Synoptical flora of North America Gray, Asa, 1810-1888 creator Smithsonian Institution contributor text book New York Ivison, Blakeman, Taylor, and Co. [etc.,etc.] 1878-1884 1878 1884
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ENG Botany Gamopetalae North America https://www.biodiversitylibrary.org/bibliography/54572 6017224 10.5962/bhl.title.54572