Compositae source details
(1920). Rhodora 22: 11. 1920
327953
1920
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Lactuca canadensis f. angustata Wiegand (original description)
Lactuca canadensis f. exauriculata Wiegand (original description)
Lactuca canadensis f. stenopoda Wiegand (original description)
Lactuca canadensis var. obovata Wiegand accepted as Lactuca canadensis L. (original description)
Lactuca canadensis f. exauriculata Wiegand (original description)
Lactuca canadensis f. stenopoda Wiegand (original description)
Lactuca canadensis var. obovata Wiegand accepted as Lactuca canadensis L. (original description)
