Species Details
Arctostaphylos glandulosa ssp. crassifolia
Del Mar manzanita
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© 2012 Neal Kramer |
© 2013 Keir Morse |
© 2016 Barbara Boethling |
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Scientific Name: Arctostaphylos glandulosa Eastw. ssp. crassifolia (Jeps.) Wells |
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Common Name: Del Mar manzanita |
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| Family: | Ericaceae | |
| Element Code: | PDERI040E8 | |
| USDA Plants Symbol: | ARGLC4 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FE (1996-10-07) |
| State List: | None |
| Global Rank: | G5T2 |
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State Rank: |
S2 |
| Other Status: | SB_CRES |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Jun-Apr
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Elevation:
0 - 365 meters 0 - 1200 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Threatened by urbanization, agricultural conversion, and fuel modification. CA populations have declined greatly. Reported to intergrade with ssp. zacaensis. See Madroño 1(4):86 (1922) for original description, Madroño 19:205 (1968) for revised nomenclature, and Four Seasons 7(4):5-27 (1987) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 16 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 38 | 67 % |
| THREAT LIST: | ||
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| Development | 28 | 49% |
| Improper burning regime | 22 | 38% |
| Non-native plant impacts | 9 | 15% |
| Road/trail construction/maint. | 7 | 12% |
| Recreational use (non-ORV) | 6 | 10% |
| Other | 5 | 8% |
| Insufficient population/stand size | 5 | 8% |
| Hybridization | 5 | 8% |
| Foot traffic/trampling | 5 | 8% |
| Vandalism/dumping/litter | 4 | 7% |
| Wood cutting or brush clearing | 1 | 1% |
| ORV activity | 1 | 1% |
| Grazing | 1 | 1% |
| Erosion/runoff | 1 | 1% |
| Agriculture | 1 | 1% |
| Military operations | 1 | 1% |
| Total Occurrences: | 57 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 2 | 13 | 3 | 4 | 2 | 33 |
| Occurrence Status: | |||||
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| Historical >20 Years | 25 | ||||
| Recent <=20 Years | 32 | ||||
| Presence: | |||||
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| Presumed Extant | 55 | ||||
| Possibly Extirpated | 2 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) Baja California (BA), California (CA) |
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California Counties and Islands: Name (Code) San Diego (SDG) |
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Quads: Name (Quad Code) Del Mar (3211782), Encinitas (3311713), La Mesa (3211771), Poway (3211781), Rancho Santa Fe (3311712), San Luis Rey (3311723), San Marcos (3311722) |
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Notes:
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Presumed Extant
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