Vascular Plants of the Gila Wilderness

Presented in Association with the
Western New Mexico University Department of Natural Sciences

Bidens cernua Linnaeus
(Nodding Beggarticks)


Family: Asteraceae

Status: Native

Synonyms:
Bidens glaucescens Greene
Bidens prionophylla Greene

Bidens cernua is an annual herb that has entire leaves that are sessile. The chaff has a yellow apex, and the achenes are curved, rounded at the apex and winged. The flower heads are erect when in flower and nodding when in fruit. Bidens cernua is found near permanent water.
Please click on an image for a larger file.



Bidens cernua, photo Russ Kleinman, Bill Norris & Kelly Kindscher, Quemado Lake, Aug. 11, 2009



Bidens cernua, closeup of inflorescence, photo Russ Kleinman, Bill Norris & Kelly Kindscher, Quemado Lake, Aug. 11, 2009



Bidens cernua, macro of yellow tipped chaff, photo Russ Kleinman, Bill Norris & Kelly Kindscher, Quemado Lake, Aug. 11, 2009



Bidens cernua, macro of bissected flowerhead, photo Russ Kleinman, Bill Norris & Kelly Kindscher, Quemado Lake, Aug. 11, 2009



Bidens cernua, macro of achene, photo Russ Kleinman, Bill Norris & Kelly Kindscher, Quemado Lake, Aug. 11, 2009


Back to the Index