Regularity: Regularly occurring
Global Range: California endemic, Santa Cruz Mountains, Santa Clara, Santa Cruz, and San Mateo Counties.
Catalog Number: US 62464
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): C. L. Anderson
Year Collected: 1873
Locality: Hills of Santa Cruz., Santa Cruz, California, United States, North America
- Isotype: Gray, A. 1876. Proc. Amer. Acad. Arts. 11: 83.
Comments: Broadleafed upland forest, chaparral, North Coast coniferous forest; openings, edges.
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 6 - 20
Comments: Fewer than fifteen occurrences.
National NatureServe Conservation Status
Rounded National Status Rank: N2 - Imperiled
NatureServe Conservation Status
Rounded Global Status Rank: G2 - Imperiled
Reasons: Endemic to California, Arctostaphylos andersonii occurs in a narrow range of Santa Clara, Santa Cruz and San Mateo Counties. It is known from fewer than 15 extant occurrences. Development is a threat to this species.
Comments: This species is threatened by development (CNPS 2003).
Arctostaphylos andersonii, the Santa Cruz Manzanita, is a species of Arctostaphylos, limited in geography to the Santa Cruz Mountains of California. It grows in openings in redwood forest below 700 m.
Arctostaphylos andersonii is a woody shrub 2-5 m high, which can resemble a small tree. The 4-7 cm smooth leaf blades have serrated edges and deeply lobed bases. It flowers February through May. The fruit is small (2-8 mm) and sticky.
The Santa Cruz Manzanita has no basal burl for regrowth and must propagate by seed.
- W. L. Jepson. 1951. A Manual of the Flowering Plants of California, p. 750.