Cordylanthus nidularius

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Scientific Name: Cordylanthus nidularius J.T. Howell
Common Name: Mt. Diablo bird's-beak
Family:	Orobanchaceae
Element Code:	PDSCR0J0F0
USDA Plants Symbol:	CONI2
Synonyms/Other Names:

Lifeform: annual herb (hemiparasitic)

Blooming Period: Jun-Aug

Elevation:
600 - 800 meters
1970 - 2625 feet

General Habitats:

Microhabitat Details:

Microhabitat:

Notes: Known from only one occurrence on Mt. Diablo. Threatened by trail construction and recreation, and possibly by fire suppression. See Leaflets of Western Botany 3(9):207 (1943) for original description, and Systematic Botany Monographs 10:48-50 (1986) for taxonomic treatment.
Threats:
Taxonomy:

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	1	50 %
Feral pigs	1	50%
Foot traffic/trampling	1	50%
Road/trail construction/maint.	1	50%

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	2

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Contra Costa (CCA)

Quads: Name (Quad Code)
Clayton (3712188)

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