Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Cirsium inamoenum var. inamoenum
Photo is of parent taxon

Greene's thistle, intermountain thistle, Jackson hole thistle
Involucres

1.5–5 cm diam.
Corollas

white or pale lavender.
2n

= 32, 34, 36 (as C. subniveum).

Cirsium inamoenum var. inamoenum
Phenology Flowering summer (Jun–Aug).
Habitat Arid slopes, roadsides, grasslands, sagebrush scrub, pinyon-juniper woodlands, montane coniferous forests
Elevation 750–2800 m (2500–9200 ft)
Distribution
from FNA
CA; ID; NV; OR; UT; WA; WY
[BONAP county map]
Discussion

Variety inamoenum grows from the rainshadow slopes of the Sierra Nevada and Cascades eastward across the northern Basin and Range province to the mountains of southern Idaho, western Wyoming, and northeastern Utah. On the slopes of Steens Mountain in eastern Oregon it forms hybrids with Cirsium eatonii var. peckii. In the Snake Range it apparently hybridizes with C. eatonii var. viperinum.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 135.
Parent taxa Asteraceae > tribe Cardueae > Cirsium > Cirsium inamoenum
Sibling taxa
C. inamoenum var. davisii
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(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.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers