Species Details

Dudleya viscida

sticky dudleya

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Species Description:

Dudleya viscida, commonly known as sticky dudleya, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Coastal bluff scrub, and Coastal scrub, growing at elevations from 10 to 550 meters. Dudleya viscida is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Lifeform: perennial herb
Blooming Period: May-Jun
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Elevation:
10 - 550 meters
35 - 1805 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral
  • Cismontane woodland
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Rocky
Notes:
Known from approximately twenty occurrences. Threatened by development and road construction. See Proceedings of the American Academy of Arts and Sciences 17:372 (1882) for original description.
Threats:
Taxonomy:
Threat List Total: 8
Total EOs % of EOs
EOs with Threat Listed: 7 23 %
THREAT LIST:
Development 2 6%
Road/trail construction/maint. 2 6%
Biocides 1 3%
Dam/Inundation 1 3%
Military operations 1 3%
Total Occurrences: 31
Element Occurrence Ranks:
A B C D X U
7 1 0 0 0 23
Occurrence Status:
Historical >20 Years 16
Recent <=20 Years 15
Presence:
Presumed Extant 31
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Orange (ORA), Riverside (RIV), San Diego (SDG)
Quads: Name (Quad Code)
Alberhill (3311764), Canada Gobernadora (3311755), Del Mar (3211782), Fallbrook (3311743), La Jolla (3211772), Las Pulgas Canyon (3311734), Margarita Peak (3311744), Oceanside (3311724), Point Loma (3211762), Rancho Santa Fe (3311712), San Luis Rey (3311723), Sitton Peak (3311754), Temecula (3311742)
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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