Calystegia vanzuukiae
Van Zuuk's morning-glory
(c) Matt Berger, some rights reserved (CC BY), uploaded by Matt Berger · licence
Family: Convolvulaceae · Type: Herb
Conservation status: CNPS 1B.3
Calystegia vanzuukiae (Van Zuuk's morning-glory) is a California herb in the Convolvulaceae family.
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Identification and appearance
Key characters: Differentiators are not available at this time.
Conservation status
CNPS 1B.3
How to tell it apart
vs Convolvulus: Convolvulus has smaller flowers with sharply pointed stigma lobes; Calystegia stigma lobes are blunt.; vs Ipomoea: Ipomoea stigma is a single rounded knob; Calystegia stigma has two distinct flattened lobes.; vs Datura: Datura flowers are upright with pleated edges; Calystegia flowers are smooth funnels.; vs Abronia: Abronia has clusters of small tubular flowers; Calystegia has single large funnel flowers.; vs Oenothera: Oenothera has four separate petals; Calystegia petals are fused into continuous funnel.
Frequently asked questions
What plant family does Calystegia vanzuukiae belong to?
Calystegia vanzuukiae is in the Convolvulaceae family, genus Calystegia.
Is Calystegia vanzuukiae rare or endangered?
Calystegia vanzuukiae carries California Rare Plant Rank 1B.3, state rank S2.
Related species
Other California species in the same genus, family, or bioregion.
- Calystegia atriplicifolia subsp. buttensis — Butte county morning-glory
- Calystegia collina — Coast range false bindweed
- Calystegia collina subsp. collina
- Calystegia collina subsp. oxyphylla — Mount saint helena morning-glory
- Calystegia collina subsp. tridactylosa — Three-fingered morning-glory
- Calystegia collina subsp. venusta — South coast range morning-glory
- Convolvulaceae sp. — Morning-glory family
- Convolvulus althaeoides — Hollyhock bindweed
- Convolvulus arvensis — Bindweed
- Convolvulus simulans — Small-flowered morning-glory
Sources: CDFW CNDDB
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.