Species Details

Calystegia vanzuukiae

Van Zuuk's morning-glory

  Download Report   Calflora    eFlora    CCH    CalPhotos  
No Photo Available
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; SB_UCSC
CRPR Changes:
added to 1B.3 on 2014-07-16
Add Date: 2014-07-16
Date Edited: 2023-06-06
Lifeform: perennial rhizomatous herb
Blooming Period: May-Aug
JFMAMJJASOND
Elevation:
500 - 1180 meters
1640 - 3870 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
Microhabitat Details:
Microhabitat:
  • Gabbroic
  • Serpentine
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 Total: 9
Total EOs % of EOs
EOs with Threat Listed: 9 69 %
THREAT LIST:
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%
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.
Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel