Taxon Report
Dudleya blochmaniae (Eastw.) Moran ssp. blochmaniaeBlochman's dudleya |
 © 2011 Aaron E. Sims |
Taxon Summary
Dudleya blochmaniae ssp. blochmaniae, commonly known as Blochman's dudleya, is a perennial herb in the Crassulaceae that is found in California and elsewhere. It occurs within Chaparral, Coastal bluff scrub, Coastal scrub, and Valley and foothill grassland, growing at elevations from 5 to 450 meters. Dudleya blochmaniae ssp. blochmaniae is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Dudleya blochmaniae (Eastw.) Moran ssp. blochmaniae |
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Common Name: |
Blochman's dudleya |
| Family: | Crassulaceae |
| Element Code: | PDCRA04051 |
| USDA Plants Symbol: | DUBLB |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 5-450 (15-1475) |
| General Habitats: | Chaparral, Coastal bluff scrub, Coastal scrub, Valley and foothill grassland |
| Microhabitat: | Clay (often), Rocky, Serpentine |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G3T2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 81 |
| Element Occurrence Ranks: | |
| Excellent (A) | 5 |
| Good (B) | 15 |
| Fair (C) | 5 |
| Poor (D) | 1 |
| None (X) | 5 |
| Unknown (U) | 50 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Orange (ORA), San Diego (SDG), San Luis Obispo (SLO), Santa Barbara (SBA), Ventura (VEN) | |
| Quads: Name (Quad Code) | |
| Calabasas (3411826), Camarillo (3411921), Cambria (3512151), Canoga Park (3411825), Casmalia (3412075), Cayucos (3512048), Dana Point (3311746), Guadalupe (3412085), Imperial Beach (3211751), La Jolla (3211772), Las Pulgas Canyon (3311734), Malibu Beach (3411816), Morro Bay North (3512047), Morro Bay South (3512037), Newbury Park (3411828), Oceanside (3311724), Pismo Beach (3512026), Point Dume (3411817), Point Sal (3412086), San Clemente (3311745), San Luis Obispo (3512036), San Luis Rey (3311723), San Simeon (3512162), Surf (3412065), Triunfo Pass (3411818) | |
Threat List Data from the CNDDB
| Threat List Total: | 15 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 41 | 51 % | |
| Development | 17 | 20% |
| Grazing | 14 | 17% |
| Non-native plant impacts | 14 | 17% |
| Foot traffic/trampling | 8 | 9% |
| Military operations | 7 | 8% |
| Improper burning regime | 6 | 7% |
| Feral pigs | 6 | 7% |
| Road/trail construction/maint. | 5 | 6% |
| ORV activity | 5 | 6% |
| Erosion/runoff | 3 | 3% |
| Vandalism/dumping/litter | 2 | 2% |
| Other | 1 | 1% |
| Recreational use (non-ORV) | 1 | 1% |
| Altered flood/tidal/hydrologic regime | 1 | 1% |
| Mining | 1 | 1% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 31 January 2025].