Cirsium ochrocentrum var. martinii

(Barlow-Irick) D. J. Keil

Sida 21: 215. 2004.

Common names: Martin’s thistle
Basionym: Cirsium ochrocentrum subsp. martinii Barlow-Irick Novon 9: 320, fig. 2. 1999
Treatment appears in FNA Volume 19. Treatment on page 123.

Stems leafy, nodes usually well separated. Leaves: distal cauline bases clasping, or if decurrent, spiny wings usually less than 1 cm. Corollas red, pink, or reddish purple (rarely white). 2n = 30, 31, 32, 34.


Phenology: Flowering spring–autumn (May–Sep).
Habitat: Desert grasslands, arid shrublands, pine-, oak-, juniper-, or mesquite-dominated woodlands, often in disturbed areas, grassy slopes in montane pine forests
Elevation: 1300–2200 m

Distribution

V19-82-distribution-map.gif

Ariz., N.Mex., Mexico (Chihuahua, Coahuila, Sonora, Durango).

Discussion

Variety martinii occurs from east-central and southeastern Arizona to western New Mexico and is scattered southward into north-central Mexico.

Selected References

None.

Lower Taxa

None.
David J. Keil +
(Barlow-Irick) D. J. Keil +
Cirsium ochrocentrum subsp. martinii +
Martin’s thistle +
Ariz. +, N.Mex. +, Mexico (Chihuahua +, Coahuila +, Sonora +  and Durango). +
1300–2200 m +
Desert grasslands, arid shrublands, pine-, oak-, juniper-, or mesquite-dominated woodlands, often in disturbed areas, grassy slopes in montane pine forests +
Flowering spring–autumn (May–Sep). +
Compositae +
Cirsium ochrocentrum var. martinii +
Cirsium ochrocentrum +
variety +