Species Details

Arctostaphylos hookeri ssp. hookeri

Hooker's manzanita

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Photo of Arctostaphylos hookeri ssp. hookeri
© 2011 Chris Winchell
Photo of Arctostaphylos hookeri ssp. hookeri
© 2011 Chris Winchell
Photo of Arctostaphylos hookeri ssp. hookeri
© 2016 Dean Wm. Taylor

Species Description:

Arctostaphylos hookeri ssp. hookeri, commonly known as Hooker's manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Closed-cone coniferous forest, and Coastal scrub, growing at elevations from 46 to 536 meters. Arctostaphylos hookeri ssp. hookeri is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Scientific Name:
Arctostaphylos hookeri D. Don ssp. hookeri
Common Name:
Hooker's manzanita
Family: Ericaceae
Element Code: PDERI040J1
USDA Plants Symbol: ARHOH4
Synonyms/Other Names:
Name Status: JEP, FNA, POWO,
IPNI, Tropicos
Lifeform: perennial evergreen shrub
Blooming Period: Jan-Jun
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Elevation:
46 - 536 meters
150 - 1760 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral
  • Cismontane woodland
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Sandy
Notes:
Threatened by agriculture, development, fire suppression, and competition with Eucalyptus.
Threats:
Taxonomy:
Threat List Total: 10
Total EOs % of EOs
EOs with Threat Listed: 12 50 %
THREAT LIST:
Development 7 29%
Foot traffic/trampling 4 16%
Other 3 12%
Improper burning regime 2 8%
Non-native plant impacts 2 8%
Total Occurrences: 24
Element Occurrence Ranks:
A B C D X U
3 4 1 2 0 14
Occurrence Status:
Historical >20 Years 14
Recent <=20 Years 10
Presence:
Presumed Extant 24
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Monterey (MNT), Santa Cruz (SCR)
Quads: Name (Quad Code)
Marina (3612167), Monterey (3612158), Prunedale (3612176), Salinas (3612166), Seaside (3612157), Soberanes Point (3612148), Spreckels (3612156), Watsonville West (3612187)
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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