Species Details

Calystegia vanzuukiae

Van Zuuk's morning-glory

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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:
CA Rare Plant Rank: 1B.3
Fed List: None
State List: None
Global Rank: G2Q
State Rank:
S2
Other Status: BLM_S
CRPR Changes:
added to 1B.3 on 2014-07-16
Add Date: 2014-07-16
Date Edited: 2021-10-04
Lifeform: perennial rhizomatous herb
Blooming Period: May-Aug
Elevation:
500 - 1180 meters
1640 - 3870 feet
General Habitat:
  • Chaparral
  • Cismontane woodland
General Micro Habitat:
Micro Habitat:
  • Gabbroic
  • Serpentinite
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:
Other:
Total Occurrences: 13
Element Occurrence Ranks:
A B C D X U
3 3 1 1 0 5
Occurrence Status:
Historical >20 Years 1
Recent <=20 Years 12
Presence:
Presumed Extant 13
Possibly Extirpated 0
Presumed Extirpated 0
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.

Map

Presumed Extant
Counties   Quads