Bidens aurea (Aiton) Sherff

Taxonomic Studies in the Coreopsidinae
Herbarium of The University of Iowa
Bidens aurea (Ait.) Sherff
1998
Thomas E. Melchert
MEXICO:	STATE OF JALISCO
Bidens aurea	n =23 II
3.2 mi east of junction of Hwy. 35 (between Guadalajara and Chapala)
and the road to El Salto and Janacatlan (0.7 mi east of railroad). Plants in
standing water of roadside marshland. Note: Stems terete: Leaves
narrowly lanceolate (71-277a), pinnatisect (71-277b), or broadly
lanceolate (i.e., like B. aurea. 71-277c). Achenes with barbed awns. On
whole this population appeared to be more like R schaffheri (n = 11)
than other B. aurea populations (n = 23).
Thomas E. Melchert, R. Ballard, C. Hart No. 71-277J*
Taxonomic Studies in the Coreopsidinae 28 Oct. 1971
Herbarium of The University of Iowa
02714854