Vascular Plants of the Gila Wilderness
Presented in Association with the
Western New Mexico University Department
of Natural Sciences
Bassia scoparia (Linnaeus) A.J. Scott
(Summer Cypress, Mexican Fireweed, Kochia)
Family: Amaranthaceae
Status: Exotic
Synonyms:
Kochia scoparia (Linnaeus) Schrader
Bassia sieversiana (Pallas) W.A. Weber
Kochia sieversiana (Pallas) C.A. Meyer
Bassia scoparia is found along roadsides and in disturbed areas in lower to middle elevations. It grows erect and branched. The stems turn red as the summer advances. It is generally considered an undesirable weed, although it was apparently first introduced as an ornamental. Bassia scoparia is an annual. The flowers occur in axillary clusters and develop into a fruit called a "utricle." Martin & Hutchins define a utricle as "a one-seeded fruit with a thin pericarp, the seed not attached to the wall." The utricles of Bassia scoparia have five small wings.
Please click on an image for a larger file.
Bassia scoparia, photo Russ Kleinman, Burro Mtns., Saddlerock Road, Aug. 15, 2007
Bassia scoparia, 1x macro of utricles, photo Russ Kleinman, Burro Mtns., Saddlerock Road, Jan. 4, 2009
Bassia scoparia, 2x macro of utricles, photo Russ Kleinman, Burro Mtns., Saddlerock Road, Jan. 4, 2009
Bassia scoparia, macro of flowers and leaves, photo Russ Kleinman & Bill Norris, Silver City near Scott Park, Aug. 7, 2009
Bassia scoparia, macro of sepals maturing into small wings, photo Russ Kleinman & Bill Norris, Silver City near Scott Park, September 23, 2009
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