Kenya Natural History Guide >>> Plants >>> Composites/Asteraceae >>> Composite Unknown Species 7

Composite # 7

Conyza schimperi ?

inflorescence of unknown asteraceae species, Eldoret, Kenya, photo © by Michael Plagens

Observed in a pasture used for cattle. Many of the plants were present and were about 1½ m tall. Eldoret, Kenya. January 2012.

each of the yellow straps is a separate flower, photo © by Michael Plagens This composite was found in an animal pasture. The inflorescence consists of numerous, closely spaced small heads.

  • Disc Flowers: The disc flowers are pale yellow and number less than 8. The heads are about 5mm in diameter.
  • Ray Flowers: The ray flowers are absent.
  • Phyllaries: There are several series in the many phyllaries subtending the florets. Peduncles and phyllaries are pubescent.
  • Pappus: fine, cappilary bristles top each seed. At maturity the head breaks apart revealing dense clumps of cottony fluff.
  • Leaves: The leaves are once or twice divided into narrow, linear segments. The color is grayish-green due to short pubescence.

These plants sometimes are host to a green aphid that are then attended to by ants in a manner suggesting the way humans keep dairy cattle.

Horseweed Aphid

Horseweed Aphid

Asteraceae -- Sunflower Family

More Information:

Kenya Natural History

Copyright Michael J. Plagens, Created on 27 July 2012,
updated 11 November 2012