Bidens serrulata (Poit.) Desf.

NEW YORK BOTANICAL GARDEN
02715236
MEXICO:
State of MEXICO
Bidens serrulata	n=12 II
Hwy 136, 1.7 mi East of the Tlaxcala-Mexico border (between kms
59-61). Frequent along roadside and in open grassy areas in pine
covered hills (also in low juniper, pine area which was heavily grazed).
Leaf forms extremely variable. Rays 5, yellow. 13 September 1967
Thomas E. Melchert, John E. Averett, Daniel J. Crawford, No. 67-45A
Taxonomic Studies in the Coreopsidinae
Herbarium of the University of Iowa
02715236