Presidio manzanita
See photo info

Sacramento Fish & Wildlife Office

Species Account

PRESIDIO MANZANITA
(Arctostaphylos hookeri ssp. ravenii)

CLASSIFICATION: Federal  Endangered Species (Federal Register 44:61911 (pdf); October 26, 1979)

CRITICAL HABITAT: None designated.

RECOVERY PLAN:  Recovery Plan for Coastal Plants of the Northern San Francisco Peninsula 2003

DESCRIPTION:

Presidio manzanita (Arctostaphylos hookeri ssp. ravenii), also known as Raven's manzanita, is a low, woody shrub in the heath family (Ericaceae). It grows 1/2 to 2 feet tall, sometimes semi-erect or tending to prostate in youth. The brachlets, petioles and rachis have tiny hairs. Sharply pointed leaves are slick and glossy with stomata on both surfaces.

Tiny (1/4 inch) spherical white flowers appear in February and March. The berry is tan-brown at maturity. See Hickman (1993) in General Information about California Plants, below, for a detailed description of the species.

DISTRIBUTION:

Historically known from scattered sites on serpentine or related soils on the San Francisco Peninsula from Fort Point in the north to Mount Davidson in the south. Of the historic sites, only one, supporting only one plant, occurs within the Golden Gate National Recreation Area. Cuttings from this plant have been propagated in the vicinity.

SPECIAL CONSIDERATIONS:

This species was listed as endangered by the California Department of Fish and Game in November 1978. The California Native Plant Society has placed it on List 1B (rare or endangered throughout its range).

REFERENCES FOR ADDITIONAL INFORMATION:

Raven, P. H. 1952. Plant notes from San Francisco, California. Leafl. West. Bot. 6:208-211.

Roof, J. B. 1976. A fresh approach to the genus Arctostaphylos in California. Four Seasons 5(2):20-24.

Roof, J. B. 1978. Studies in Arctostaphylos (Ericaceae). Four Seasons 5(4):2-21.

Roof, J. B. 1979. [Continuation of] A fresh approach to the genus Arctostaphylos in California. Changing Seasons 1(1):3-24.

U.S. Fish and Wildlife Service. 1979. Determination That Arctostaphylos hookeri ssp. ravenii Is an Endangered Species. Washington, DC.

U.S. Fish and Wildlife Service. 2003. Recovery Plan for Coastal Plants of the Northern San Francisco Peninsula. Portland, Oregon.

Wells, P. V. 1968. New taxa, combinations, and chromosome numbers in Arctostaphylos (Ericaceae). Madroño 19:193-210.

General Information about California Plants

Photo credit: Presidio manzanita © 1995 Dean Wm. Taylor Calphoto ID: 0000 0000 0801 0210

Prepared by Endangered Species Div., Sacramento Fish & Wildlife Office, U.S. Fish & Wildlife Service

Contact us: Sacramento Fish and Wildlife Office, 2800 Cottage Way, Room W-2605, Sacramento, California 95825 Phone (916) 414-6600 ~ FAX (916) 414-6713 The U.S. Fish and Wildlife Service is a part of the United States Government Department of Interior Many documents on our web site are published using Adobe's® Portable Document Format (PDF). To display or print these documents, you must use the Acrobat® reader, which you can download free at Acrobat® Reader. Privacy and Security, Disclaimer, Copyright and Technology Requirements Webmaster fw1sacweb@fws.gov (To comment on specific issues see our comment page.) is the U.S. Government Search Engine Regulations.gov - Federal web site that makes it easier for you to participate in Federal rulemaking. On this site, you can find, review, and submit comments on Federal documents that are open for comment and published in the Federal Register, the Government's legal newspaper.

Students! Career-related training and employment. Protect and conserve fish, wildlife, plants and their habitats. Vacation, holiday and sick leave. Your student job could lead to a career with the U.S. Fish and Wildlife Service. Check out the national Student Job page.