Snowwool Thistle, Snowy Thistle
Cirsium occidentale var. candidissimum
Synonym: Cirsium pastoris
![Close-up of the flower head of Snowy Thistle, Snowwool Thistle: Cirsium occidentale var. candidissimum (Synonym: Cirsium pastoris)](occidentale/candidissimum/candidissimum1a.jpg)
Close-up of the flower head of snowy thistle as seen along Forest Service Road 4201, Siskiyou National Forest........July 15, 2012.
- ![Snowy Thistle, Snowwool Thistle: Cirsium occidentale var. candidissimum (Synonym: Cirsium pastoris)](occidentale/candidissimum/candidissimum1f.jpg)
![Leaf of Snowy Thistle, Snowwool Thistle: Cirsium occidentale var. candidissimum (Synonym: Cirsium pastoris)](occidentale/candidissimum/candidissimum1e.jpg)
- ![Inflorescence of Snowy Thistle, Snowwool Thistle: Cirsium occidentale var. candidissimum (Synonym: Cirsium pastoris)](occidentale/candidissimum/candidissimum1d.jpg)
Snowy thistle as seen along Forest Service Road 4201, Siskiyou National Forest........July 15, 2012.
Paul Slichter