Conyza canadensis (L.) Cronquist, Bull. Torrey Bot. Club 70:632. 1943
syn: Erigeron canadensis L.
Common names: butterweed, Canadian horseweed, Canadian-fleabane, hogweed, horseweed
Annual herb, 50 cm to 2 m tall, branched mostly in upper part; leaves oblanceolate to linear, ciliolate along margin and hispid on nerves; heads small, 3-4 mm across, in branched panicles; ray florets white, disc florets yellow; phyllaries glabrous to strigose.
The plant can be easily differentiated from related C. bonariensis by its strict habit, numerous small heads and distinct white ray florets.
Photographed from Balgarden Srinagar and Botanical Garden below Cheshmashahi, both in Kashmir.
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297 Mob: 9810359089http://people.du.ac.in/~singhg45/