Species Details
Arctostaphylos rudis
sand mesa manzanita
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Scientific Name: Arctostaphylos rudis Jeps. & Wies. |
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Common Name: sand mesa manzanita |
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| Family: | Ericaceae | |
| Element Code: | PDERI041E0 | |
| USDA Plants Symbol: | ARRU2 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_SBBG |
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CRPR Changes: changed from 1B.2 to 1B.1 on 2024-10-01 |
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| Add Date: | 1980-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Nov-Feb
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Elevation:
25 - 322 meters 80 - 1055 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Plants on Nipomo Mesa (SLO Co.) have been determined to be a novel species, with A. rudis becoming restricted to SBA Co. See Erythea 8:100 (1938) for original description. |
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Threats: Threatened by development, agriculture, oil extraction, and road construction and maintenance. Severely reduced on Nipomo Mesa, where potentially seriously threatened by housing development. |
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Taxonomy: |
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| Threat List Total: | 10 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 19 | 53 % |
| THREAT LIST: | ||
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| Development | 15 | 41% |
| Non-native plant impacts | 5 | 13% |
| Road/trail construction/maint. | 5 | 13% |
| Wood cutting or brush clearing | 4 | 11% |
| Other | 3 | 8% |
| Improper burning regime | 3 | 8% |
| Agriculture | 2 | 5% |
| Disking | 1 | 2% |
| Grazing | 1 | 2% |
| Vandalism/dumping/litter | 1 | 2% |
| Total Occurrences: | 36 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 4 | 7 | 4 | 4 | 0 | 17 |
| Occurrence Status: | |||||
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| Historical >20 Years | 24 | ||||
| Recent <=20 Years | 12 | ||||
| Presence: | |||||
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| Presumed Extant | 36 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) San Luis Obispo (SLO), Santa Barbara (SBA) |
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Quads: Name (Quad Code) Arroyo Grande NE (3512025), Casmalia (3412075), Guadalupe (3412085), Lompoc (3412064), Lompoc Hills (3412054), Los Alamos (3412063), Nipomo (3512014), Oceano (3512015), Orcutt (3412074), Pismo Beach (3512026), Point Arguello (3412056), Point Sal (3412086), Sisquoc (3412073), Surf (3412065), Tranquillon Mtn. (3412055) |
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Notes:
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Presumed Extant
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