Taxon Report
Arctostaphylos purissima WellsLa Purisima manzanita |
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Taxon Summary
Arctostaphylos purissima, commonly known as La Purisima manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral (sandy), and Coastal scrub, growing at elevations from 60 to 390 meters. Arctostaphylos purissima is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Arctostaphylos purissima Wells |
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Common Name: |
La Purisima manzanita |
| Family: | Ericaceae |
| Element Code: | PDERI041A0 |
| USDA Plants Symbol: | ARPU10 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial evergreen shrub |
| Blooming Period: Nov-May | Nov-May |
| Elevation: | 60-390 (195-1280) |
| General Habitats: | Chaparral, Coastal scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; SB_USDA |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 41 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 7 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 29 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Santa Barbara (SBA) | |
| Quads: Name (Quad Code) | |
| Casmalia (3412075), Guadalupe (3412085), Lompoc (3412064), Lompoc Hills (3412054), Los Alamos (3412063), Orcutt (3412074), Point Arguello (3412056), Point Conception (3412044), Point Sal (3412086), Sacate (3412043), Santa Rosa Hills (3412053), Sisquoc (3412073), Solvang (3412052), Surf (3412065), Tranquillon Mtn. (3412055) | |
Threat List Data from the CNDDB
| Threat List Total: | 9 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 12 | 29 % | |
| Development | 7 | 17% |
| Improper burning regime | 4 | 9% |
| Non-native plant impacts | 3 | 7% |
| Grazing | 3 | 7% |
| Road/trail construction/maint. | 2 | 4% |
| Other | 1 | 2% |
| Landfill | 1 | 2% |
| Military operations | 1 | 2% |
| Foot traffic/trampling | 1 | 2% |
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 February 2025].