Species Details
Arctostaphylos pilosula
Santa Margarita manzanita
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Scientific Name: Arctostaphylos pilosula Jeps. & Wies. |
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Common Name: Santa Margarita manzanita |
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| Family: | Ericaceae | |
| Element Code: | PDERI042Z0 | |
| USDA Plants Symbol: | ARPI | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2? |
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State Rank: |
S2? |
| Other Status: | BLM_S; SB_SBBG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-08-25 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Dec-May
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Elevation:
75 - 1100 meters 245 - 3610 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Threatened by development, road construction, road maintenance, vehicles, vegetation clearing, and non-native plants. Plants from the coastal sector of the San Luis Range and Arroyo Grande drainage in SLO Co. were previously treated as A. wellsii. See Erythea 8:101 (1938) for original description. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 13 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 24 | 41 % |
| THREAT LIST: | ||
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| Development | 14 | 24% |
| Road/trail construction/maint. | 7 | 12% |
| ORV activity | 5 | 8% |
| Wood cutting or brush clearing | 4 | 6% |
| Grazing | 3 | 5% |
| Mining | 3 | 5% |
| Non-native plant impacts | 2 | 3% |
| Erosion/runoff | 2 | 3% |
| Other | 2 | 3% |
| Improper burning regime | 2 | 3% |
| Agriculture | 1 | 1% |
| Dam/Inundation | 1 | 1% |
| Hybridization | 1 | 1% |
| Total Occurrences: | 58 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 5 | 5 | 4 | 6 | 0 | 38 |
| Occurrence Status: | |||||
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| Historical >20 Years | 39 | ||||
| Recent <=20 Years | 19 | ||||
| Presence: | |||||
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| Presumed Extant | 58 | ||||
| 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) |
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Quads: Name (Quad Code) Arroyo Grande NE (3512025), Atascadero (3512046), Caldwell Mesa (3512023), Huasna Peak (3512013), La Panza (3512032), Lopez Mtn. (3512035), Morro Bay South (3512037), Nipomo (3512014), Oceano (3512015), Pismo Beach (3512026), Port San Luis (3512027), Pozo Summit (3512033), San Luis Obispo (3512036), Santa Margarita Lake (3512034), Tar Spring Ridge (3512024) |
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Notes:
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Presumed Extant
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