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: | IUCN_EN; SB_CalBG/RSABG; SB_SBBG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-09-06 |
| 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. 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 and non-native plants. See Rancho Santa Ana Botanic Garden Occasional Publications 14 (2014) by S.E. Vanderplank for conservation plan. |
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Threats: |
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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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