12-22-2016

Chorizanthe robusta var. robusta

Chorizanthe robusta var. robusta 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.

ITIS Reports — Chorizanthe robusta var. robusta ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.Chorizanthe robusta is variable in form, growing decumbent or erect and reaching a maximum length of half a meter. It is grayish in color and hairy. The inflorescence is made up of several flowers with each flower surrounded by white or pink bracts with hooked tips. The flower itself is just a few millimeters long and white to pink in color.

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It is composed of two varieties:

var. robusta, known generally as the robust spineflower, which is known only from southern Santa Cruz and Monterey Counties,
var. hartwegii, the Scotts Valley spineflower, which is known from a few locations in Scotts Valley in Santa Cruz County.

The plant is closely related to Chorizanthe pungens, another rare endemic from the area.

Detailed information

Full Name: Robust spineflower (Chorizanthe robusta var. robusta)

Where found: Wherever found

Critical Habitat:N/A

Species Group:Flowering Plants

Current listing status

Status	Date Listed	Lead Region	Where Listed
Endangered	02/04/1994	California/Nevada Region (Region 8)	Wherever found

States/US Territories in which the Robust spineflower, Wherever found is known to or is believed to occur: California
US Counties in which the Robust spineflower, Wherever found is known to or is believed to occur: View All

Federal register documents

Date	Citation Page	Title
05/21/2010	75 FR 28636 28642	Initiation of 5-Year Reviews of 34 Species in California and Nevada; Availability of 96 Completed 5-Year Reviews in California and Nevada
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
12/20/2004	69 FR 76003 76004	Recovery Plan for Chorizanthe robusta var. robusta (Robust Spineflower)
05/28/2002	67 FR 36822 36845	Critical Habitat Designation for Chorizanthe robusta var. robusta (Robust Spineflower)
09/19/2001	66 FR 48225 48227	ETWP; Reopening of Public Comment Period and Notice of Availability of Draft Economic Analysis for Proposed Critical Habitat Determination for the Chorizanthe robusta var. robusta (Robust Spineflower)
05/03/2001	66 FR 22141 22144	ETWP; Proposed Designation of Critical Habitat for the Robust Spineflower; Technical Corrections
02/15/2001	66 FR 10419 10439	Endangered and Threatened Wildlife and Plants; Proposed Designation of Critical Habitat for Chorizanthe robusta var. robusta (Robust Spineflower)
09/19/2000	65 FR 56590	Availability of a Draft Recovery Plan for the Robust Spineflower (Chorizanthe robusta var. robusta) From Santa Cruz County, California
02/04/1994	59 FR 5499 5510	ETWP; Endangered Status for Three Plants and Threatened Status for One Plant From Sandy and Sedimentary Soils of Central Coastal California
10/24/1991	56 FR 55107 55114	ETWP; Proposed Endangered Status for Five Plants from Sandy and Sedimentary Soils of Central Coastal California; 56 FR 55107 55114

Recovery

To learn more about critical habitat please see http://ecos.fws.gov/crithab

Date	Title	Plan Action Status	Plan Status
12/20/2004	Recovery Plan for Robust Spineflower (Chorizanthe robusta robusta)	View Implementation Progress	Final

Date	Title	Plan Action Status	Plan Status
12/20/2004	Recovery Plan for Robust Spineflower (Chorizanthe robusta robusta)	View Implementation Progress	Final

Date	Citation Page	Title	Document Type
05/21/2010	75 FR 28636 28642	Initiation of 5-Year Reviews of 34 Species in California and Nevada; Availability of 96 Completed 5-Year Reviews in California and Nevada	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
12/20/2004	69 FR 76003 76004	Recovery Plan for Chorizanthe robusta var. robusta (Robust Spineflower)	Notice Final Recovery Plan Availability
09/19/2001	66 FR 48225 48227	ETWP; Reopening of Public Comment Period and Notice of Availability of Draft Economic Analysis for Proposed Critical Habitat Determination for the Chorizanthe robusta var. robusta (Robust Spineflower)	Notice Doc. Availability Notice Reopen Comment
09/19/2000	65 FR 56590	Availability of a Draft Recovery Plan for the Robust Spineflower (Chorizanthe robusta var. robusta) From Santa Cruz County, California	Notice Recovery Plan Avail.