Chorizanthe valida - Earth.com
chorizanthe valida
12-22-2016

Chorizanthe valida

Chorizanthe valida NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

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FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

Chorizanthe valida is a rare species of flowering plant in the buckwheat family known by the common name Sonoma spineflower. It is endemic to West MarinMarin County, California, where it is known from only one remaining natural population at Point Reyes National Seashore. It was thought to be extinct until 1980 when the Point Reyes population was discovered.

Chorizanthe valida is a federally listed endangered species.

This plant is erect in form, reaching up to about 30 centimeters tall. The inflorescence is a cluster of flowers with each flower surrounded by six reddish or gray bracts, each tipped with a straight awn. The awns are bright red when new and age ivory white. They are not hard or hooked in shape like those of many other Chorizanthe. The flower is a few millimeters long and white or pink in color.

Detailed information
Full Name: Sonoma spineflower (Chorizanthe valida)
Where found: Wherever found
Critical Habitat:N/A
Species Group:Flowering Plants
Current listing status
Status Date Listed Lead Region Where Listed
Endangered 06/22/1992 California/Nevada Region (Region 8) Wherever found
  • States/US Territories in which the Sonoma spineflower, Wherever found is known to or is believed to occur: California
  • US Counties in which the Sonoma spineflower, Wherever found is known to or is believed to occur: View All
Federal register documents
Date
Citation Page
Title
05/25/2011 76 FR 30377 30382 Initiation of 5-Year Reviews of Species in California, Nevada, and the Klamath Basin of Oregon
03/25/2009 74 FR 12878 12883 Initiation of 5-Year Reviews of 58 Species in California, Nevada, Arizona, and Utah; Availability of Completed 5-Year Reviews in California and Nevada
06/22/1992 57 FR 27848 27859 ETWP; Six Plants and Myrtle's Silverspot Butterfly from Coastal Dunes in Northern and Central California Determined to Be Endangered; 57FR 27848 27858
03/22/1991 56 FR 12317 12326 ETWP; Six Plants and Speyeria zerene myrtleae (Myrtle's Silverspot Butterfly) From Coastal Dunes in Northern and Central California Proposed as Endangered; 56 FR 12317 12326
Recovery
No critical habitat rules have been published for the Sonoma spineflower.
Date
Title
Plan Action Status
Plan Status
09/29/1998 Seven Coastal Plants and the Myrtle's Silverspot Butterfly Recovery Plan View Implementation Progress Final
Date
Title
Plan Action Status
Plan Status
09/29/1998 Seven Coastal Plants and the Myrtle's Silverspot Butterfly Recovery Plan View Implementation Progress Final
Date
Citation Page
Title
Document Type
05/25/2011 76 FR 30377 30382 Initiation of 5-Year Reviews of Species in California, Nevada, and the Klamath Basin of Oregon
  • Notice 5-year Review, Completion
03/25/2009 74 FR 12878 12883 Initiation of 5-Year Reviews of 58 Species in California, Nevada, Arizona, and Utah; Availability of Completed 5-Year Reviews in California and Nevada
  • Notice 5-year Review, Initiation
Date
Title
07/28/2010 Chorizanthe valida (Sonoma spineflower) 5-Year Review
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