Chorizanthe robusta var. hartwegii

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Scientific Name: Chorizanthe robusta Parry var. hartwegii (Benth.) Rev. & Morgan
Common Name: Scotts Valley spineflower
Family:	Polygonaceae
Element Code:	PDPGN040Q1
USDA Plants Symbol:	CHROH
Synonyms/Other Names:

Lifeform: annual herb

Blooming Period: Apr-Jul

Elevation:
230 - 245 meters
755 - 805 feet

General Habitats:

Microhabitat Details:

Microhabitat:

Notes: Known only from Scotts Valley. Threatened by development, vehicles, and non-native plants. See C. robusta in TJM (1993). See Phytologia 67(5):357-360 (1989) for revised nomenclature, and Fremontia 24(4):8-11 (1996) for taxonomic discussion.
Threats:
Taxonomy:

THREAT LIST:
Threat List Total:	4
	Total EOs	% of EOs
EOs with Threat Listed:	3	75 %
Development	3	75%
Non-native plant impacts	3	75%
Other	3	75%
Road/trail construction/maint.	1	25%

Occurrence Status:
Historical >20 Years	1
Recent <=20 Years	3

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Santa Cruz (SCR)

Quads: Name (Quad Code)
Felton (3712211), Laurel (3712118)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Presumed Extant

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CNPS Rare Plant Inventory