Arctostaphylos canescens  Eastw.

Ubiquity:  Common?

Distritution:  S1/2 & from Mt. St. Helena to Wildhorse Valley

Plant Communities:  Regular Chaparral

Habitats:  Dry, sunny, rocky, brushyu slopes/summits; in volcanic & sedimentary areas

Elevations:  800-3800'

Comments:  

Updated:  1/27/98

Arctostaphylos glandulosa  Eastw.

Ubiquity:  Very uncommon

Distritution:  Seen only on Table Mt. & Blue Ridge Rd. in the Vaca Mts.; one shrub each

Plant Communities:  Regular Chaparral

Habitats:  Dry, sunny, rocky, brushy slopes/summits; in volcanic & sedimentary places

Elevations:  2440-2500'

Comments:  Herbage glandular

Updated:  1/27/98

Arctostaphylos glandulosa  Eastw.

     var. cushingiana  (Eastw.) P. Wells

Ubiquity:  Common

Distritution:  Throughout except S of Napa

Plant Communities:  Regular Chaparral

Habitats:  Dry, sunny, rocky, brushy slopes/summits; in volcanic & sedimentary places

Elevations:  1400-3750'

Comments:  Twigs & leaves utterly non-glandular

Updated:  1/27/98

Arctostaphylos manzanita  C. Parry

Ubiquity:  Very common

Distritution:  Throughout except Napa Marsh

Plant Communities:  Many

Habitats:  Dry, sunny to shaded, rocky or clayey, brushy or forested or wooded slopes/flats/summits/canyonsides/streamsides & banks; in all geologic formations, but not commonly on serpentine

Elevations:  320-3000'

Comments:  

Updated:  1/27/98

Arctostaphylos manzanita  C. Parry

     ssp. elegans  (Jeps.) P. Wells

Ubiquity:  Very uncommon

Distritution:  Known only on Mt. St. Helena

Plant Communities:  Regular Chaparral

Habitats:  A dry, sunny, rocky, brushy slope; in a volcanic area

Elevations:  1550(?)-4300'

Comments:  = A. e.  Confirmation needed for report of Craters Region

Updated:  1/27/98

Arctostaphylos manzanita  C. Parry

     ssp. laevigata  (Eastw.) Munz

Ubiquity:  Very uncommon

Distritution:  Known only in the Vaca Mts.

Plant Communities:  Regular Chaparral

Habitats:  Dry, sunny, rocky, brushy slopes; in sedimentary formations

Elevations:  2000'?

Comments:  Collection needed

Updated:  3/31/98

Arctostaphylos stanfordiana  C. Parry

Ubiquity:  Common

Distritution:  SE1/4 & E1/2 except S of Napa

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

Habitats:  Dry, sunny, rocky, forested or wooded or brushy slopes/summits; in volcanic areas

Elevations:  700-2670'

Comments:  

Updated:  1/27/98

Arctostaphylos tomentosa  (Pursh) Lindley

     ssp. crustacea  (Eastw.) P. Wells

Ubiquity:  Very uncommon

Distritution:  Vaca Mts., Foss Valley to Mt. George to Skyline Park

Plant Communities:  Regular Chaparral

Habitats:  Dry, sunny, rocky, brushy slopes/summits; in volcanic & sedimentary areas

Elevations:  500-2500'

Comments:  = A. c.

Updated:  1/27/98

Arctostaphylos viscida  C. Parry

     ssp. pulchella  (Howell) P. Wells

Ubiquity:  Very common on serpentine

Distritution:  N1/2 & SE1/4

Plant Communities:  Serpentine Chaparral, Cypress Forest 

Habitats:  Dry, sunny, rocky, ultramafic, brushy slopes/summits/flats; in serpentine areas

Elevations:  400-2500'

Comments:  

Updated:  1/27/98