Vascular Plants of the Gila Wilderness

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

Cirsium ochrocentrum Gray var. martinii (P. Barlow-Irick) Keil
(Martin's Thistle)

Family: Asteraceae

Status: Native

Cirsium ochrocentrum Gray subsp. martinii (P. Barlow-Irick) Keil

Cirsium ochrocentrum var. martinii is a biennial thistle with tomentose stems and curvy spiny leaves. The phyllaries have a prominent dorsal ridge. This thistle blooms along roadsides in the hills in summertime. It is shorter and more branched toward the base than is Cirsium neomexicanum with which it can be found growing together. It also is a more vivid pink purple compared to the more pastel pink of Cirsium neomexicanum. Cirsium neomexicanum has a broader involucre compared to its height. Cirsium arizonicum is also similar but does not have the prominent ridge in the center of the phyllaries. This plant was identified with the help of Bob Sivinski.
Please click on an image for a larger file.

Cirsium ochrocentrum var. martinii, photo Russ Kleinman, Burro Mtns., Mangas Cyn. Road, June 17, 2007

Cirsium ochrocentrum var. martinii, growth habit, photo Russ Kleinman, Rte. 180 near Buckhorn, May 14, 2009

Cirsium ochrocentrum var. martinii, closeup of inflorescence, photo Russ Kleinman, Rte. 180 near Buckhorn, May 14, 2009

Back to the Index