Taxon Report
Dudleya parva Rose & Davids.Conejo dudleya |
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Classification
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Scientific Name: |
Dudleya parva Rose & Davids. |
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Common Name: |
Conejo dudleya |
| Family: | Crassulaceae |
| Element Code: | PDCRA04016 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: May-Jun | May-Jun |
| Elevation: | 60-450 (195-1475) |
| General Habitats: | Coastal scrub, Valley and foothill grassland |
| Microhabitat: | Clay (sometimes), Gravelly (sometimes), Rocky (sometimes), Volcanic (sometimes) |
| 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: | FT |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 13 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 5 |
| Fair (C) | 4 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 2 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Ventura (VEN) | |
| Quads: Name (Quad Code) | |
| Newbury Park (3411828), Simi (3411837), Thousand Oaks (3411827) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 9 | 69 % | |
| Development | 6 | 46% |
| Non-native plant impacts | 5 | 38% |
| Recreational use (non-ORV) | 2 | 15% |
| Agriculture | 1 | 7% |
| ORV activity | 1 | 7% |
| Foot traffic/trampling | 1 | 7% |
| Grazing | 1 | 7% |
Notes
| Known only from the western end of Simi Hills to Conejo Grade. Threatened by horticultural collecting, recreation, vehicles, and urbanization. Potentially threatened by development. Federally-listed as D. abramsii ssp. parva; see this name in The Jepson Manual (1993). See Bulletin of the Southern California Academy of Sciences 22:5 (1923) for original description, and Madroño 30(3):191 (1983) for distributional information. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 January 2025].