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Plant Profile

Schreiber's Manzanita (Arctostaphylos glutinosa)

Global Rank: G1 - Critically Imperiled
Legal Status: N/A
Family: Ericaceae
State: CA
Nature Serve ID: 137569
Lifeform: Shrub
Date Inducted in National Collection:

Description:

Otherwise known as the Schreiber’s Manzanita, Arctostaphylos glutinosa is a critically endangered member of the Manzanita family with only six known populations left as of 2013; all of which can only be found in northern Santa Cruz, CA. This sturdy shrub is a 3’oclock bloomer (March-April) that produces clusters of pale pink, urn-shaped flowers and prefers a mixed pine forest/chaparral habitat where it can grow up to 2m tall. A. glutinosa’s also has a preference for the region’s shale (chalk) sediment, a prime contributor for its global status. In recent years, there’s been a wave of corporate site development for future missile launch sites (which are often based on chalky sediment). Other threatening factors include road maintenance and other forms of human development in the area.

Where is Schreiber's Manzanita (Arctostaphylos glutinosa) located in the wild?

Habitat:

Schreiber's manzanita prefers a mixed habitat including chaparral, closed-cone pine forest, and oak woodland. In these areas, they grow on hillsides and slopes where the sediment is mainly made up of shale (chalk).

States & Provinces:

Schreiber's Manzanita can be found in California

Which CPC Partners conserve Schreiber's Manzanita (Arctostaphylos glutinosa)?

California Botanic Garden

Not Sponsored

Conservation Actions

Assigned 06/09/17

University of California-Santa Cruz Arboretum & Botanic Garden

Not Sponsored

Conservation Actions

Assigned 01/17/19

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

09/01/2020

Based on an September 2020 extract of the California Plant Rescue Database, University of California-Santa Cruz Arboretum & Botanic Garden holds 1 accessions of Arctostaphylos glutinosa in orthodox seed collection. We are uncertain as to how many total seeds are in this collection.

09/01/2020

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 1 accessions of Arctostaphylos glutinosa in orthodox seed collection. There are as many as 13528 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

08/05/2020

Based on an August 2020 extract of the California Plant Rescue Database, University of California-Santa Cruz Arboretum & Botanic Garden has collected 2 seed accessions of Arctostaphylos glutinosa from 2 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 13 maternal plants