Calystegia collina
Coast range false bindweed
(c) Adam J. Searcy, some rights reserved (CC BY) · licence
Family: Convolvulaceae · Type: Vine · Native
Calystegia collina (Coast range false bindweed) is a native California vine in the Convolvulaceae family, recognized by no sympatric species.
Coast range false bindweed is a California native perennial herb found in Coast Range bioregions in rocky or gravelly areas. Flowering from May to July, this plant produces white flowers 25 to 55 millimeters long with delicate, slightly flared trumpet-like form. Growing with decumbent stems that spread low to the ground, it forms a low-growing mat with soft, tomentose (woolly) texture. Its leaves are generally less than 3 centimeters wide, distinctively reniform or kidney-shaped with wavy margins and indistinct basal lobes. The plant emerges from underground rhizomes, creating subtle patches in its rocky habitat.
Identification and appearance
Key characters: Geographically isolated; no sympatric species
Habitat and range
California counties: San Benito, Sonoma, Lake, Napa, San Luis Obispo, Monterey, Marin, Colusa, Santa Clara, Nevada, Fresno, Santa Barbara
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
Is Calystegia collina native to California?
Yes. Calystegia collina is native to California (recorded as native).
Where in California does Calystegia collina grow?
Calystegia collina occurs in San Benito, Sonoma, Lake, Napa, San Luis Obispo, Monterey, Marin, Colusa and other counties.
What plant family does Calystegia collina belong to?
Calystegia collina is in the Convolvulaceae family, genus Calystegia.
Related species
Other California species in the same genus, family, or bioregion.
- 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
- Calystegia felix — lucky morning- glory
- Calystegia longipes — Paiute false bindweed
Sources: Jepson eFlora · Index of California Plant Names · CalPhotos
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.