Erigeron angustatus  E. Greene

Ubiquity:  Very uncommon

Distritution:  Reported from St. Helena, E. side of  Mt. St. Helena, & Soda Canyon Creek near Silverado Trail

Plant Communities:  Serpentine Chaparral, Blue Oak Woodland?

Habitats:  Dry, sunny, rocky, ultramafic, brushy places; in serpentine formations

Elevations:  60-2600'

Comments:  Confirmation & Collection needed.  But there is no serpentine on Soda Creek!  Rare and Endangered (CNPS- 1B).  Perhaps misidentified as E. reductus var. a. 

Updated:  2/26/98

Erigeron biolettii  E. Greene

Ubiquity:  Very uncommon

Distritution:  Reported only from Howell Mt., Mt. Veeder, and somewhere near St. Helena Hospital (Deer Park)

Plant Communities:  Forests

Habitats:  (Moist?) or dry, sunny, rocky, forested or wooded slopes/ & ledges along rivers; in volcanic formations

Elevations:  240-2400'?

Comments:  Collection needed.  Said to intergrade with species inornatus.  More information needed (CNPS-3)

Updated:  2/26/98

Erigeron foliosus  Nutt.

Ubiquity:  Very uncommon

Distritution:  Reported for Blue Ridge in the Brooks Quadrangle, Harris Canyon, Skyline Park, and Cup & Saucer Hill in Napa

Plant Communities:  Regular Chaparral, Blue Oak Woodland

Habitats:  Dry, sunny, rocky, brushy or wooded or grassy slopes

Elevations:  450-2600'

Comments:  Confirmation and collection needed

Updated:  2/26/98

Erigeron foliosus  Nutt.

     var. franciscensis  G. Nesom

Ubiquity:  Very uncommon

Distritution:  ?

Plant Communities:  Blue Oak Woodland, Regular Chaparral?

Habitats:  Dry, sunny, wooded or brushy or grassy dunes?

Elevations:  ?

Comments:  Confirmation & collection needed

Updated:  2/26/98

Erigeron inornatus  A. Gray

Ubiquity:  Very uncommon

Distritution:  Reported only in Snell Valley

Plant Communities:  

Habitats:  

Elevations:  

Comments:  Confirmation & collection needed

Updated:  3/31/98

Erigeron petrophilus  E. Greene

Ubiquity:  Common

Distritution:  N 1/2, SW 1/4 except Napa Marsh

Plant Communities:  Mixed Evergreen Forest, Blue Oak Woodland, Regular Chaparral, Coastal Prairie

Habitat:  Dry, sunny, rocky, forested or wooded or brushy summits; in volcanic formations

Elevations:  460-3500'

Comments:  

Updated:  2/26/98

Erigeron petrophilus  E. Greene

     var. viscidulus  (A. Gray) G. Nesom

Ubiquity:  Uncommon

Distritution:  Throughout except Napa Marsh

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

Habitats:  Dry, sunny, rocky, forested or wooded or brushy summits; in sandstone & volcanic areas

Elevations:  900-3500'

Comments:  Confirmation & collection needed.  = E. inornatus var. v.  <au be E. biolettii

Updated:  2/3/98

Erigeron philadelphicus  L.

Ubiquity:  Uncommon

Distritution: N1/2, SW1/4 except Napa Marsh

Plant Communities:  Many, including Riparian

Habitats:  Moist, sunny, grassy springs/streamsides

Elevations:  10-2100'

Comments:  Collection needed

Updated:  2/26/98

Erigeron reductus  (Cronq.) G. Nesom

     var. angustatus  (A. Gray) G. Nesom

Ubiquity:  Uncommon

Distritution:  N1/2, SW1/4, except Napa Marsh

Plant Communities:  Serpentine & Regular Chaparral, Blue Oak Woodland

Habitats:  Dry, sunny, rocky, wooded or brushy places; in volcanic formations, sometimes on serpentine

Elevations:  100-1860'

Comments:  Needs confirmation; questionable in Napa Co.  = E. inornatus var. angustatus

Updated:  2/26/98