Taxon Report
Malacothrix similis W.S. Davis & RavenMexican malacothrix |
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Taxon Summary
Malacothrix similis, commonly known as Mexican malacothrix, is a annual herb in the Asteraceae that is found in California and elsewhere. It occurs within Coastal dunes, growing at elevations from 0 to 40 meters. Malacothrix similis is ranked 2A, Plants Presumed Extirpated in California, But More Common Elsewhere.Classification
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Scientific Name: |
Malacothrix similis W.S. Davis & Raven |
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Common Name: |
Mexican malacothrix |
| Family: | Asteraceae |
| Element Code: | PDAST660D0 |
| USDA Plants Symbol: | MASI5 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Apr-May | Apr-May |
| Elevation: | 0-40 (0-130) |
| General Habitats: | Coastal dunes |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2A |
| Global Rank: | G2G3 |
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State Rank: |
SH |
| State List: | None |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 3 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 3 |
| Unknown (U) | 0 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Santa Barbara (SBA)?*, Ventura (VEN)* | |
| Quads: Name (Quad Code) | |
| Oxnard (3411922)*, San Miguel Island East (3312083)?*, San Miguel Island West (3312084)?*, Santa Cruz Island A (3311987)?*, Santa Cruz Island B (3311986)?*, Santa Cruz Island C (3311985)?*, Santa Cruz Island D (3311984)?* | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | % | |
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Selected References
| CRPR List Addition on 2007-04-05 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 October 2025].