Global Range: California endemic: Lake, Mendocino, Napa, and Sonoma Counties.
Comments: Closed-cone coniferous forest, chaparral, cismontane woodland; volcanic or serpentinite.
Molecular Biology and Genetics
Barcode data: Ceanothus confusus
Statistics of barcoding coverage: Ceanothus confusus
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
National NatureServe Conservation Status
Rounded National Status Rank: N2 - Imperiled
NatureServe Conservation Status
Rounded Global Status Rank: G2 - Imperiled
Reasons: Endemic to California, Ceanothus confusus (C. prostratus ssp. confusus) occurs in four counties and is threatened by development.
Comments: Development is the most substantial threat (CNPS 2001, CNDDB 2003). In addition, roads, dirtbike use, vineyard conversion, logging and grazing are also threats (CNDDB 2003).
Ceanothus confusus is a species of shrub in the buckthorn family Rhamnaceae known by the common name Rincon Ridge ceanothus. It is endemic to northern California where it grows in the coastal mountains north of the San Francisco Bay Area. Its habitats include coniferous forest, woodland, and chaparral. This is a low, spreading shrub often forming a short mat up to about 1.2 meters wide. The stem is gray-brown with new twigs having a reddish color and fuzzy texture. The evergreen leaves are oppositely arranged. Each is up to 2 centimeters long and oval in shape with 3 to 5 large teeth. The upper surface is shiny green and the underside is paler and feltlike in texture with hairs along the veins. The inflorescence is a small cluster of blue or purple flowers. The fruit is a horned capsule about half a centimeter wide.
Names and Taxonomy
Comments: Kartesz (1994) treats it as Ceanothus prostratus ssp. confusus and Kartesz (1999) treats it as a distinct species.
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