Senecio aronicoides  DC.

Ubiquity:  Common

Distritution:  Throughout except Napa Marsh

Plant Communities:  Mixed Evergreen Forest, Blue Oak Woodland, Regular & Serpentine Chaparral

Habitats:  Dry, sunny or shaded, rocky, ultramafic or not, forested or wooded or brushy slopes/meadows/ & flats; & in disturbed places like burns; in volcanic or serpentine formations

Elevations:  150-2500'

Comments:  

Updated:  3/31/98

Senecio breweri  Burtt Davy

Ubiquity:  Very uncommon

Distritution:  Reported only on Aetna Springs Rd.

Plant Communities:  Blue Oak Woodland

Habitats:  A dry, shaded, rocky, wooded & grassy valley floor

Elevations:  720'

Comments:  Confirmation and collection needed

Updated:  3/31/98

Senecio clevelandii  E. Greene

Ubiquity:  Common

Distritution:  NE 1/3

Plant Communities: Serpentine Chaparral 

Habitats:  Moist, sunny, clayey, ultramafic, brushy seeps/springs/creekbeds/ & creeksides; in serpentine formations

Elevations:  560-2090'

Comments:  Limited Distribution (CNPS-4)

Updated:  3/31/98

Senecio eurycephalus  A. Gray

Ubiquity:  Uncommon

Distritution:  NE 1/3 & Mt. St. Helena in R.L.S. Park

Plant Communities:  Blue Oak Woodland, Serpentine & Regular Chaparral

Habitats:  Dry, sunny, rocky, ultramafic or not, slopes/creekbeds; in volcanic & serpentine formations

Elevations:  470-3000'

Comments:  

Updated: 3/31/98

Senecio flaccidus  Less.

     var. douglasii  (DC.) B. Turner & T. Barkley

Ubiquity:  Uncommon

Distritution:  SE 1/6 from Quarry Canyon to Monticello Dam to Mt. Vaca

Plant Communities:  Blue Oak Woodland, Regular Chaparral, Ruderal

Habitats:  Dry, sunny or shadey, sub-barren, steep roadcuts/roadbanks

Elevations:  500-1000'

Comments:  May have once grown in Butts Canyon.  = S. d.

Updated:  3/31/98

Senecio greenei  A. Gray

Ubiquity:  Common

Distritution:  NE 1/2

Plant Communities: Mixed Evergreen Forest, Yellow Pine Forest, Serpentine Chaparral, Northern Interior Conifer Forest 

Habitats:  Dry, sunny or partially-shaded, rocky, ultramafic or not, brushy or forested slopes; in volcanic & serpentine formations

Elevations:  400-2400'

Comments:  Poisonous

Updated:  3/31/98

Senecio hydrophilus  Nutt.

Ubiquity:  Very uncommon

Distritution:  Only known in the Napa Marsh

Plant Communities:  Coastal Salt Marsh

Habitats:  Moist, sunny, silty, saline, marshy areas/berms/ & riverbanks

Elevations:  5-10'

Comments:  

Updated:  12/8/97

Senecio mikanioides  Walp.

Ubiquity:  Very uncommon

Distritution:  Reported only for Napa, Wall Rd. & Soda Canyon

Plant Communities:  Ruderal

Habitats:  Dry, shaded, canyons/seasonal drainages; & in disturbed places like landscapes

Elevations:  100-1400'

Comments:  New name:  Delairea odorata.  Non-native

Updated:  3/31/98

Senecio sylvaticus  L.

Ubiquity:  Uncommon (?)

Distritution:  W1/2

Plant Communities:  Regular Chaparral, Blue Oak Woodland, Ruderal

Habitats:  Dry, sunny, rocky, wooded or brushy places; & in disturbed areas

Elevations:  20-1600'

Comments:  Non-native

Updated:  3/31/98

Senecio vulgaris  L.

Ubiquity:  Very common

Distritution:  Throughout

Plant Communities:  Ruderal

Habitats:  Dry, sunny, ultramafic or not, rocky or not, grassy or weedy slopes/waste areas/river edges/ & creekbeds; & in disturbed places like gardens/roadsides/dikes; in most geologic formations

Elevations:  10-2400'

Comments:  Non-native

Updated:  3/31/98