Affiliation:
1. Department of Forest Science; Oregon State University; Corvallis Oregon 97331
Subject
Plant Science,Genetics,Ecology, Evolution, Behavior and Systematics
Reference37 articles.
1. Notes on the history of the willows and poplars;Berry;Plant World,1917
2. The status of the black cotton wood (Populus trichocarpa Torrey and Gray);Brayshaw;Canadian Field Naturalist,1965
3. Systematics and variability;Bugala,1973
4. North American cottonwoods (Populus, Salicaceae) of sections Abaso and Aigeiros;Eckenwalder;Journal of the Arnold Arboretum,1977
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