Taxon Report
Dudleya multicaulis (Rose) Moranmany-stemmed dudleya |
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Classification
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Scientific Name: |
Dudleya multicaulis (Rose) Moran |
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Common Name: |
many-stemmed dudleya |
| Family: | Crassulaceae |
| Element Code: | PDCRA040H0 |
| USDA Plants Symbol: | DUMU |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jul | Apr-Jul |
| Elevation: | 15-790 (50-2590) |
| General Habitats: | Chaparral, Coastal scrub, Valley and foothill grassland |
| Microhabitat: | Clay (often) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 154 |
| Element Occurrence Ranks: | |
| Excellent (A) | 8 |
| Good (B) | 21 |
| Fair (C) | 4 |
| Poor (D) | 4 |
| None (X) | 12 |
| Unknown (U) | 105 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Bernardino (SBD), San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Alberhill (3311764), Azusa (3411728), Baldwin Park (3411718), Black Star Canyon (3311776), Burbank (3411823), Calabasas (3411826), Canada Gobernadora (3311755), Corona North (3311785), Corona South (3311775), El Monte (3411811), El Toro (3311766), Fallbrook (3311743), Glendora (3411727), Hollywood (3411813), La Habra (3311788)*, Laguna Beach (3311757), Lake Elsinore (3311763), Lake Mathews (3311774), Las Pulgas Canyon (3311734), Margarita Peak (3311744), Morro Hill (3311733), Mt. Baldy (3411726), Newport Beach (3311768)*, Orange (3311777), Prado Dam (3311786)*, Sage (3311658), San Clemente (3311745), San Dimas (3411717), San Juan Capistrano (3311756), San Onofre Bluff (3311735), Sitton Peak (3311754), Tustin (3311767), Vail Lake (3311648)?, Whittier (3311881) | |
Threat List Data from the CNDDB
| Threat List Total: | 17 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 83 | 54 % | |
| Development | 56 | 36% |
| Road/trail construction/maint. | 42 | 27% |
| Grazing | 15 | 9% |
| Foot traffic/trampling | 14 | 9% |
| Non-native plant impacts | 10 | 6% |
| Recreational use (non-ORV) | 8 | 5% |
| Landfill | 7 | 4% |
| Military operations | 5 | 3% |
| Other | 5 | 3% |
| Mining | 3 | 1% |
| Disking | 3 | 1% |
| Erosion/runoff | 2 | 1% |
| Improper burning regime | 2 | 1% |
| ORV activity | 2 | 1% |
| Vandalism/dumping/litter | 2 | 1% |
| Wood cutting or brush clearing | 1 | 0% |
| Agriculture | 1 | 0% |
Notes
| Occurrence on 49B needs verification; exact location and identification uncertain. Seriously threatened by development, road construction and maintenance, fire suppression, non-native plants, mining, grazing, and recreation. Possibly threatened by military activities See Bulletin of the New York Botanical Garden 3:38 (1903) for original description, and Madroño 45(3):215-220 (1998) and 57(1):42-53 (2010) for population ecology information. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 28 December 2024].