Taxon Details
Malacothrix squalida
island malacothrix
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Taxon Summary:
Malacothrix squalida, commonly known as island malacothrix, is a annual herb in the Asteraceae that is found only in California. It occurs within Chaparral, Cismontane woodland, and Coastal bluff scrub, growing at elevations from 15 to 200 meters. Malacothrix squalida is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Malacothrix squalida Greene |
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Common Name: island malacothrix |
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| Family: | Asteraceae | |
| Element Code: | PDAST660K0 | |
| USDA Plants Symbol: | MASQ | |
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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: | 1B.1 |
| Fed List: | FE (1997-07-31) |
| State List: | None |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | SB_SBBG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Apr-Jul
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Elevation:
15 - 200 meters 50 - 655 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Last seen on SCZ Isl. in 1968 and on ANA Isl. in 1986. Threatened by feral herbivores on SCZ Isl., and by seabird-caused erosion on ANA Isl. Field surveys needed; 1989 surveys on ANA Isl. were unsuccessful. See Bulletin of the California Academy of Sciences 2:152 (1886) for original description, and Madroño 44(3):223-244 (1997) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 2 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 2 | 50 % |
| THREAT LIST: | ||
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| Erosion/runoff | 2 | 50% |
| Non-native plant impacts | 1 | 25% |
| Total Occurrences: | 4 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 0 | 0 | 0 | 0 | 4 |
| Occurrence Status: | |||||
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| Historical >20 Years | 3 | ||||
| Recent <=20 Years | 1 | ||||
| Presence: | |||||
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| Presumed Extant | 4 | ||||
| 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) Santa Barbara (SBA), Ventura (VEN) |
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Quads: Name (Quad Code) Anacapa Island (3311983), Santa Cruz Island C (3311985) |
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Notes:
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Presumed Extant
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