Ceanothus decornutus V. T. Parker is a newly described species found on serpentine outcrops in western Marin County. This taxon has been considered as part of C. jepsonii Greene in recent treatments. Ceanothus decornutus differs in a number of ways from C. jepsonii and suggests relationships to other northern San Francisco Bay species. Beyond the species description and a key to similar taxa north of San Francisco Bay, an analysis of leaf characters is used to indicate possible relationships.
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1 October 2014
A Newly Described Serpentine-Endemic Ceanothus (Rhamnaceae) From Coastal Marin County, California
V. Thomas Parker
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Madroño
Vol. 61 • No. 4
October 2014
Vol. 61 • No. 4
October 2014
Ceanothus
Chaparral
maritime
Rhamnaceae
serpentine