Taxon Report
Arctostaphylos auriculata Eastw.Mt. Diablo manzanita |
 © 2006 Steve Matson |
Classification
|
Scientific Name: |
Arctostaphylos auriculata Eastw. |
|
Common Name: |
Mt. Diablo manzanita |
| Family: | Ericaceae |
| Element Code: | PDERI04040 |
| USDA Plants Symbol: | ARAU |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial evergreen shrub |
| Blooming Period: Jan-Mar | Jan-Mar |
| Elevation: | 135-650 (445-2135) |
| General Habitats: | Chaparral, Cismontane woodland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G2 |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_UCSC |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 17 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 5 |
| Fair (C) | 5 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 5 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Contra Costa (CCA) | |
| Quads: Name (Quad Code) | |
| Antioch South (3712187), Clayton (3712188), Diablo (3712178), Tassajara (3712177) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 10 | 59 % | |
| Improper burning regime | 6 | 35% |
| Recreational use (non-ORV) | 6 | 35% |
| Road/trail construction/maint. | 6 | 35% |
| Grazing | 5 | 29% |
| Other | 4 | 23% |
| Development | 2 | 11% |
| Biocides | 1 | 5% |
| ORV activity | 1 | 5% |
| Vandalism/dumping/litter | 1 | 5% |
| Wood cutting or brush clearing | 1 | 5% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 January 2025].