CPC Plant Profile: Shagbark Manzanita
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Plant Profile

Shagbark Manzanita (Arctostaphylos rudis)

Photo Credit: John Game
Description
  • Global Rank: G2 - Imperiled
  • Legal Status: N/A
  • Family: Ericaceae
  • State: CA
  • Nature Serve ID: 154699
  • Date Inducted in National Collection: 01/17/2019

Arctostaphylos rudis is a manzanita shrub about 1 to 3 meters in length.  It has a grey, shredding bark and bright green elliptical leaves about 3-8 mm long.  It's pinkish-white flowers grow in clusters from November through February and are vase shaped and 5-8 mm in length.  The fruits are spherical and about 8-14mm in diameter.

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Updates
  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, Santa Barbara Botanic Garden holds 1 accessions of Arctostaphylos rudis in orthodox seed collection. There are as many as 50 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

  • 08/05/2020
  • Seed Collection

Based on an August 2020 extract of the California Plant Rescue Database, Santa Barbara Botanic Garden has collected 1 seed accessions of Arctostaphylos rudis from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 15 maternal plants

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Photos
Nomenclature
Taxon Arctostaphylos rudis
Authority Jepson & Wies. ex Jepson
Family Ericaceae
CPC Number 242
ITIS 23521
USDA ARRU2
Common Names Shagbark Manzanita | Sand mesa manzanita
Associated Scientific Names Arctostaphylos rudis
Distribution There are about 36 occurrences of A. rudis located within the Santa Barbara and San Luis Obispo Counties of California.
State Rank
State State Rank
California S2
Habitat

A. rudis can be found within the sandy soils of coastal sage scrub and chaparral environments

Ecological Relationships

Non-green plants obtain nutrition from green plants through fungal intermediates. (Jepson)

Pollinators
Common Name Name in Text Association Type Source InteractionID
Reintroduction
Lead Institution State Reintroduction Type Year of First Outplanting

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