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pro vyhledávání: '"Anthony J. Lucas"'
Publikováno v:
Biochemical Systematics and Ecology. 1:21-33
Specimens of the variable strand ragweeds of the Pacific Coasts of North and South America have commonly been divided among two or more specific or subspecific taxa. The results of this study indicate that they comprise a single heteromorphic and che
Publikováno v:
Biochemical Systematics and Ecology. 1:13-20
A study of a large number of populations of Ambrosia chamissonis ranging from Southern California to British Columbia, has disclosed chemical differences within the species. Six germacranolides, in addition to chamissonin, have been found in the vari