Ceanothus masonii
{{Short description|Species of flowering plant}}
{{Italic title}}
{{Speciesbox
|name = Mason's ceanothus
|image = Ceanothus masonii 01.jpg
|image_caption = Fruits
|genus = Ceanothus
|species = masonii
|authority = McMinnSpecies was originally described and published in Madroño; Journal of the California Botanical Society. Berkeley. 6: 171. 1942 {{ cite web |url=http://www.ipni.org:80/ipni/idPlantNameSearch.do?id=50730-2 |title=Plant Name Details for Ceanothus masonii |quote=Distribution: California (Southwestern U.S.A., Northern America) |work=IPNI |accessdate=July 17, 2010}}
| status = G1
| status_system = TNC
| status_ref = {{cite web | url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.154612 | title=NatureServe Explorer 2.0 }}
}}
Ceanothus masonii is a species of shrub in the buckthorn family, Rhamnaceae, known by the common name Mason's ceanothus. It is endemic to Marin County, California, where it is known only from an area near Bolinas on the Point Reyes National Seashore. It grows in the coastal chaparral on the windblown bluffs..
Description
This rare shrub grows to heights approaching 2 meters. The evergreen leaves are oppositely arranged and less than 2 centimeters long. They are round to oval in shape and have tiny, sharp teeth along the edges, sometimes spine-tipped. The inflorescence is a small cluster of deep blue to purple flowers. The fruit is a capsule just a few millimeters wide, topped with minute horns. This ceanothus is closely related to Ceanothus gloriosus, and may in fact be a variety of that species.[http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi/Go?_id=ceanothus_masonii&sort=DEFAULT&search=Ceanothus%20masonii California Native Plants Society Rare Plants Inventory]
References
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External links
- [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?6586,6589,6626 Jepson Manual Treatment of Ceanothus masonii]
- [http://plants.usda.gov/java/profile?symbol=CEMA3 USDA Plants Profile for Ceanothus masonii]
- [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Ceanothus+masonii Ceanothus masonii — U.C. Photo gallery]
{{Taxonbar|from=Q5055726}}
Category:Endemic flora of California
Category:Natural history of the California chaparral and woodlands
Category:Natural history of Marin County, California
Category:Plants described in 1942
Category:Endemic flora of the San Francisco Bay Area
{{Rhamnaceae-stub}}