Species Details

Malacothrix squalida

island malacothrix

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Scientific Name:
Malacothrix squalida Greene
Common Name:
island malacothrix
Family: Asteraceae
Element Code: PDAST660K0
USDA Plants Symbol: MASQ
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: Apr-Jul
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Elevation:
15 - 200 meters
50 - 655 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral
  • Cismontane woodland
Microhabitat Details:
Microhabitat:
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 MadroƱo 44(3):223-244 (1997) for taxonomic treatment.
Threats:
Taxonomy:
Threat List Total: 2
Total EOs % of EOs
EOs with Threat Listed: 2 50 %
THREAT LIST:
Erosion/runoff 2 50%
Non-native plant impacts 1 25%
Total Occurrences: 4
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 4
Occurrence Status:
Historical >20 Years 3
Recent <=20 Years 1
Presence:
Presumed Extant 4
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Anacapa Island (3311983), Santa Cruz Island C (3311985)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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