Calystegia vanzuukiae

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Scientific Name: Calystegia vanzuukiae Brummitt & Namoff
Common Name: Van Zuuk's morning-glory
Family:	Convolvulaceae
Element Code:	PDCON040Q0
USDA Plants Symbol:	CAVA
Synonyms/Other Names:

Lifeform: perennial rhizomatous herb

Blooming Period: May-Aug

Elevation:
500 - 1180 meters
1640 - 3870 feet

General Habitats:

Microhabitat Details:

Microhabitat:

Notes: Known only from the Central Sierra Nevada foothills. Potentially threatened by mining, vehicles, and non-native plants. Probably a stabilized hybrid between C. stebbinsii and C. occidentalis ssp. occidentalis. See Aliso 31(1):15-18 (2013) for original description.
Threats:
Taxonomy:

THREAT LIST:
Threat List Total:	9
	Total EOs	% of EOs
EOs with Threat Listed:	9	69 %
Road/trail construction/maint.	8	61%
Non-native plant impacts	6	46%
ORV activity	4	30%
Recreational use (non-ORV)	2	15%
Dam/Inundation	2	15%
Foot traffic/trampling	2	15%
Logging	2	15%
Mining	1	7%
Other	1	7%

Occurrence Status:
Historical >20 Years	1
Recent <=20 Years	12

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
El Dorado (ELD), Placer (PLA)

Quads: Name (Quad Code)
Dutch Flat (3912027), Foresthill (3912017), Garden Valley (3812077), Georgetown (3812087), Michigan Bluff (3912016)

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 Status Review:

Proposed Addition to CRPR 1B.3, G2Q / S2 (2014)