Family: Asteraceae
nodding beggar-ticks, nodding bur-marigold
[Bidens cernua f. discoidea L., more...]
Scott A. Milburn
Josh Sulman
University of Wisconsin - Madison (WIS-VP)
Etymology: Bidens: derived from Latin bis, "twice," and dens, "tooth," hence meaning "2-toothed" and referring to the bristles on the achenes
Plants: erect, annual, 4"-40" tall forb
Leaves: mostly stalkless, undivided but with coarse teeth
Flowers: head 1 1/4"-2" wide with yellow rays to 1/2" long, center disk to 1/2"-1" wide, leafy bracts usually longer than the disk; inflorescence of many hemispherical heads (often nodding with age) in large, loose, stalked clusters; blooms Aug.-Oct.
Fruits: dry, with 2-4 barbed awns
Habitat: wet; meadows, marshes, shores
Conservation Status: Native
Plants: erect, annual, 4"-40" tall forb
Leaves: mostly stalkless, undivided but with coarse teeth
Flowers: head 1 1/4"-2" wide with yellow rays to 1/2" long, center disk to 1/2"-1" wide, leafy bracts usually longer than the disk; inflorescence of many hemispherical heads (often nodding with age) in large, loose, stalked clusters; blooms Aug.-Oct.
Fruits: dry, with 2-4 barbed awns
Habitat: wet; meadows, marshes, shores
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 4, Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions University of Wisconsin - Green Bay: Wetland Plants: Photos, descriptions, information USGS - Northern Prairie Wildlife Research Center: Wetland Plants and Plant Communities of Minnesota and Wisconsin Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada" Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key
Josh Sulman
Scott A. Milburn
Janice Stiefel
Merel R. Black
Hugh H. Iltis
Josh Sulman
Richard Bauer
Janice Stiefel
Josh Sulman
Kitty Kohout
Josh Sulman
Josh Sulman
Merel R. Black
Botanical Illustration
