Calystegia vanzuukiae
Common Name: Van Zuuk's morning-glory
Family: Convolvulaceae
Element Code: PDCON040Q0
Full Name: Calystegia vanzuukiae Brummitt & Namoff

2014 Steven Perry
Biology Glossary
Rarity Status Glossary
Occurrence Data from CDFW
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 13
  • Element Occurrence Ranks:
    A B C D X U
    3 3 1 1 0 5
  • Population Status:
    >20 yrs
    <=20 yrs
    1 12
  • Presence:
    Present Extant Possibly Extirpated Presumed Extirpated
    13 0 0
Notes Glossary
  • 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.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 2014-07-16
  • Last Update: 2014-12-17
Location Glossary
  • Elevation: 500 - 1180 meters
  • California Endemic: yes
  • Other States:
  • California Counties and Islands:   name (code)
    El Dorado (ELD),  Placer (PLA)
  • Quads:   name (DWR code) USGS code
    Georgetown (526A) 3812087,  Garden Valley (526D) 3812077,  Michigan Bluff (540C) 3912016,  Dutch Flat (541A) 3912027,  Foresthill (541D) 3912017
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable. This data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant Presumed Extirpated or Unknown 3837
Links to Leading Resources of Taxon Information
Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website [accessed ].

3812087=Georgetown (526A) 3812087;3812077=Garden Valley (526D) 3812077;3912016=Michigan Bluff (540C) 3912016;3912027=Dutch Flat (541A) 3912027;3912017=Foresthill (541D) 3912017