Flora of North America species comparison

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Cirsium ochrocentrum var. ochrocentrum
Photo is of parent taxon

yellowspine thistle
Stems

densely leafy, nodes crowded.
Leaves

distal cauline bases often long-decurrent.
Corollas

white or pale lavender to purple.
2n

= 32, 34.

Cirsium ochrocentrum var. ochrocentrum
Phenology Flowering spring–summer (May–Sep).
Habitat Short-grass prairies, desert grasslands, sagebrush steppes, pinyon-juniper, mesquite woodlands, often in disturbed areas
Elevation 400–2200 m (1300–7200 ft)
Distribution
from FNA
AZ; CA; CO; KS; NE; NM; OK; SD; TX; UT; WY
[BONAP county map]
Discussion

Variety ochrocentrum grows in the Great Plains from South Dakota to New Mexico and Texas. It has been introduced in California; perhaps the Utah and Arizona records are introductions as well.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 123.
Parent taxa Asteraceae > tribe Cardueae > Cirsium > Cirsium ochrocentrum
Sibling taxa
C. ochrocentrum var. martinii
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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