Taxon Details
Agave shawii var. shawii
Shaw's agave
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©2017 Keir Morse |
©2013 Keir Morse |
©2017 Keir Morse |
Taxon Summary:
Agave shawii var. shawii, commonly known as Shaw's agave, is a perennial leaf in the Agavaceae that is found in California and elsewhere. It occurs within Coastal bluff scrub, and Coastal scrub, growing at elevations from 3 to 120 meters. Agave shawii var. shawii is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.|
Scientific Name: Agave shawii Engelm. var. shawii |
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Common Name: Shaw's agave |
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| Family: | Agavaceae | |
| Element Code: | PMAGA010P1 | |
| USDA Plants Symbol: | ||
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 2B.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2G3T2T3 |
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State Rank: |
S1 |
| Other Status: | |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2025-04-17 |
| Lifeform: perennial leaf | ||||||||||||||
Blooming Period: Sep-May
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Elevation:
3 - 120 meters 10 - 395 feet |
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General Habitats:
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| Microhabitat Details: Maritime succulent scrub | ||||||||||||||
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Microhabitat:
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Notes: Introduced at several locations, including Cabrillo NM. See Rancho Santa Ana Botanic Garden Occasional Publications 14 (2014) by S.E. Vanderplank for conservation plan. |
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Threats: Seriously threatened by habitat loss, habitat disturbance, development, trampling, genetic isolation, low recruitment, and genetic dilution from introduced plants. Previously threatened by horticultural collecting, but less so in recent years. |
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Taxonomy: |
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| Threat List Total: | 9 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 5 | 63 % |
| THREAT LIST: | ||
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| Foot traffic/trampling | 4 | 50% |
| Erosion/runoff | 3 | 37% |
| Non-native plant impacts | 2 | 25% |
| Other | 2 | 25% |
| Road/trail construction/maint. | 1 | 12% |
| Vandalism/dumping/litter | 1 | 12% |
| Wood cutting or brush clearing | 1 | 12% |
| Development | 1 | 12% |
| Military operations | 1 | 12% |
| Total Occurrences: | 8 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 1 | 0 | 2 | 0 | 4 |
| Occurrence Status: | |||||
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| Historical >20 Years | 0 | ||||
| Recent <=20 Years | 8 | ||||
| Presence: | |||||
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| Presumed Extant | 8 | ||||
| Possibly Extirpated | 0 | ||||
| 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), Imperial Beach (3211751), Point Loma (3211762) |
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Notes:
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Presumed Extant
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