Cirsium cymosum  (E. Greene) Jeps./J. T. Howell?

Ubiquity:  Uncommon

Distritution:  N 1/2 & Oakville Grade

Plant Communities:  Forests, Blue Oak Woodland, Regular Chaparral

Habitats:  Dry, sunny, rocky forested or wooded or brushy slopes/ & meadows; in volcanic, sedimentary, & serpentine formations

Elevations:  (400?)-1200'

Comments:  

Updated:  2/26/98

Cirsium douglasii  DC.

Ubiquity:  Uncommon

Distritution:  NE 1/4 & American Canyon

Plant Communities:  Serpentine Chaparral

Habitats:  Wet or moist, sunny, rocky, ultramafic springs; in serpentine formations

Elevations:  600-1750'

Comments:  Serpentine endemic.  = C. b.

Updated:  2/26/98

Cirsium occidentale  (Nutt.) Jeps.

     var. venustum  (E. Greene) Jeps.

Ubiquity:  Common

Distritution:  Throughout except S of Napa

Plant Communities:  Mixed Evergreen Forest, Regular & Serpentine Chaparral

Habitats:  Dry, sunny, rocky, ultramafic or not, forested or brushy or grassy slopes/summits/talus/ & roadcuts; in volcanic, sedimentary, & serpentine formations

Elevations:  150-3000'

Comments:  = C. proteanum  

Updated:  2/26/98

Cirsium quercetorum  (A. Gray) Jeps.

Ubiquity:  Very uncommon

Distritution:  Known only from Knoxville-Morgan Valley Rd., Napa,  Skyline Park, American Canyon, & Napa-Sonoma Rd.

Plant Communities:  Coastal Prairie

Habitats:  Dry, sunny, grassy slopes; in volcanic formations

Elevations:  100-2000'

Comments:  Confirmation needed for Knoxville-Morgan Valley Rd.

Updated:  2/26/98

Cirsium remotifolium  (Hook.) DC.

Ubiquity:  Very uncommon

Distritution:  Reported only from Trinity Rd., Howell Mt. Rd., & Calistoga

Plant Communities:  Forests

Habitats:  Dry, sunny, rocky, grassy openings/slopes in forested areas

Elevations:  365-1810'

Comments:  Confirmation & collection needed.  = C. amblylepis, C. callilepis

Updated:  2/26/98

Cirsium vulgare  (Savi) Ten.

Ubiquity:  Very common

Distritution:  Throughout

Plant Communities:  Many, including Ruderal and Riparian

Habitats:  Moist, sunny seeps/streamsides/streambanks/streambeds/pondsides/dikes; & disturbed areas on all geologic formations including serpentine

Elevations:  10-2500'

Comments:  Non-native

Updated:  2/26/98