Ceanothus masonii
Common Name: Mason's ceanothus
Family: Rhamnaceae
Synonyms:
Element Code: PDRHA04200
Full Name: Ceanothus masonii McMinn
USDA PLANTS Symbol: CEMA3

© 1995 Doreen L. Smith
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 6
  • Element Occurrence Ranks:
    A B C D X U
    0 1 1 0 0 4
    • Population Status:
    Historic
    >20 yrs    		 Recent
    <=20 yrs
    4 2
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    6 0 0
Notes Glossary
  • Known from approximately five occurrences. Threatened by fire suppression. May be a variety of C. gloriosus; needs further study. See Madroño 6(5):171-173 (1942) for original description.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1974-01-01
  • Last Update: 2010-07-02
Location Glossary
  • Elevation: 230 - 500 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Marin (MRN)
  • Quads:   name (DWR code) USGS code
    Bolinas (467B) 37122H6,  Point Reyes NE (485A) 38122B7
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable.
Presumed Extant Presumed Extirpated or Unknown 214
Links to Leading Resources of Taxon Information
Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .
-122.625,37.875

CA
37122H6=Bolinas (467B) 37122H6,38122B7=Point Reyes NE (485A) 38122B7