Taxon Report
Dissanthelium californicum (Nutt.) Benth.California dissanthelium |
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Taxon Summary
Dissanthelium californicum, commonly known as California dissanthelium, is a annual herb in the Poaceae that is found in California and elsewhere. It occurs within Coastal scrub, growing at elevations from 5 to 500 meters. Dissanthelium californicum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Dissanthelium californicum (Nutt.) Benth. |
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Common Name: |
California dissanthelium |
| Family: | Poaceae |
| Element Code: | PMPOA29010 |
| USDA Plants Symbol: | DICA5 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Mar-May | Mar-May |
| Elevation: | 5-500 (15-1640) |
| General Habitats: | Coastal scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 7 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 7 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX) | |
| Quads: Name (Quad Code) | |
| San Clemente Island North (3211885)*, Santa Catalina East (3311833), Santa Catalina North (3311844), Santa Catalina South (3311834) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 14 % | |
| Non-native animal impacts | 1 | 14% |
| Non-native plant impacts | 1 | 14% |
Notes
| Rediscovered in March 2005 by Jenny McCune; now known from fewer than ten extant occurrences on SCT Isl. Need quads for historical collections. Threatened by non-native plants. Feral goats may have caused extirpations. Feral animals threats now mostly eradicated on all islands. |
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Threats: |
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Taxonomy: |
Selected References
| CRPR List Addition on 2005-07-08 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 30 October 2025].