(Vol. 07, 2004-12) Comments Upon the Taxonomy and Typification of Amaranthus Torreyi, A. Fimbriatus, and A. Venulosus (Amaranthaceae)
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Amaranthus torreyi and A. fimbriatus are partially sympatric, seemingly weedy species native to the southwestern United States and northwestern Mexico. A taxonomic account of each is provided, along with maps showing their distribution. Lectotypification of A. venulosus is provided; the taxon is treated as a form of A. fimbriatus.