Bidens squarrosa var. tereticaulis (DC.) Roseman

MEXICO:
Bidens squarrosa H.B.K.
State of YUCATAN
var tereticaulis (P.C.) Roseman
NEW YORK BOTANICAL GARDEN
02703598
Sprawling over roadside ditches; Hwy 180 near turn off to
Chitzen-ltza; 0-100 m. Heads 5-rayed; Leaves smell like
citrus; stems very brittle and thin.
Robin Roseman, No. 611	13 Jan 1980
Taxonomic Studies in the Coreopsidinae
Herbarium of the University of Iowa
02703598