Species Details

Dudleya blochmaniae ssp. blochmaniae

Blochman's dudleya

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Photo of Dudleya blochmaniae ssp. blochmaniae
© 2011 Aaron E. Sims
Photo of Dudleya blochmaniae ssp. blochmaniae
© 2011 Aaron E. Sims
Photo of Dudleya blochmaniae ssp. blochmaniae
© 2016 Keir Morse
Scientific Name:
Dudleya blochmaniae (Eastw.) Moran ssp. blochmaniae
Common Name:
Blochman's dudleya
Family: Crassulaceae
Element Code: PDCRA04051
USDA Plants Symbol: DUBLB
Synonyms/Other Names:
Lifeform: perennial herb
Blooming Period: Apr-Jun
JFMAMJJASOND
Elevation:
5 - 450 meters
15 - 1475 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral
  • Coastal scrub
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Clay (often)
  • Rocky
  • Serpentine
Notes:
Threatened by grazing, trampling, development, erosion, and non-native plants. Northern and southern populations genetically distinct.
Threats:
Taxonomy:
Threat List Total: 15
Total EOs % of EOs
EOs with Threat Listed: 41 51 %
THREAT LIST:
Development 17 20%
Grazing 14 17%
Non-native plant impacts 14 17%
Foot traffic/trampling 8 9%
Military operations 7 8%
Total Occurrences: 81
Element Occurrence Ranks:
A B C D X U
5 15 5 1 5 50
Occurrence Status:
Historical >20 Years 43
Recent <=20 Years 38
Presence:
Presumed Extant 76
Possibly Extirpated 2
Presumed Extirpated 3
California Endemic:
California Island:
States: Name (Code)
Baja California (BA), California (CA)
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)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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