The following Participating Institutions are custodians for this species in the CPC National Collection:
Rancho Santa Ana Botanic Garden
San Diego Zoo Global
The conservation of Baccharis vanessae is fully sponsored.
Naomi Fraga contributed to this Plant Profile.
Baccharis vanessae (Encinitas baccharis) is a shrubby member of the Asteraceae (sunflower family). This dioecious broom-like shrub is 1.6 to 4.3 ft (0.5 to 1.3 m) tall, and found in coastal and foothill habitats of San Diego County, California. The species was discovered in 1976 by Beauchamp in the city of Encinitas; he later described the species in 1980. Baccharis vanessae was listed as endangered by the State of California in 1986 and threatened by the federal government in 1996.
Distribution & Occurrence
Baccharis vanessae occurs in coastal and foothill habitats and is associated with southern maritime chaparral at coastal sites and dense mixed chaparral at inland sites. Southern maritime chaparral is a low growing fairly open habitat type and is considered a threatened plant community. Three soil types are associated with this species. The soil association at the coastal sites is within an alluvial-Huehuero complex, while inland sites occur on San Miguel-Exchquer and Cieneba series soils (Beauchamp 1980).
|There are fourteen known extant occurrences of B. vanessae estimated to contain 2,000 individuals. Five of these occurrences have fewer than six plants each, and no population is known to have more than 300 individuals (USFWS 1996).|
Conservation, Ecology & Research
Beauchamp, M.R. 1980. Baccharis vannessae, a new species from San Diego County, California. Phytologia. 46: 216-222.
Boyd, S.; Ross, T.S.; Mistretta, O.; Bramlet, D. 1995. Vascular flora of the San Mateo Canyon Wilderness Area, Cleveland National Forest, California. Aliso. 14: 109-139.
United States Fish and Wildlife Service [USFWS]. 1996. Endangered and Threatened Wildlife and Plants; Determination of Endangered or Threatened Status for Four Southern Maritime Chaparral Plant Taxa from Coastal Southern California and Northwestern Ba