Calystegia collina subsp. venusta
South coast range morning-glory, South Coast Range Morning-Glory
Photo: parent species Calystegia collina · (c) Adam J. Searcy, some rights reserved (CC BY) · licence
Family: Convolvulaceae · Type: Vine · Native
Conservation status: CNPS 4.3
Calystegia collina subsp. venusta (South coast range morning-glory) is a native California vine in the Convolvulaceae family, recognized by dense hairiness, spreading non-concealing bracts.
South coast range morning-glory is a native perennial found in the South Coast Ranges in open grassy or rocky places and oak/pine woodlands, often on serpentine soils at elevations below 600 meters. Flowering from April to June, this plant produces white to pale pink flowers 25 to 44 millimeters long with delicate, trumpet-shaped corollas. Growing with densely hairy stems 8 to 30 centimeters long that spread across the ground, it forms a low, sprawling habit. Its leaves are roughly triangular to kidney-shaped, with subtle or distinct lobes that spread across the terrain. The plant's bracts are distinctive, spreading 8 to 16 millimeters wide and lanceolate to widely ovate in shape.
Identification and appearance
Key characters: 13 sympatric species; key features are dense hairiness, spreading non-concealing bracts
Habitat and range
Habitat: Open grassy or rocky places or in open oak/pine woodland, often serpentine
Elevation: < 600 m
California counties: Monterey, San Benito, Santa Barbara, Kern, Fresno, San Luis Obispo
Bloom period
Calystegia collina subsp. venusta blooms Apr-Jun.
Conservation status
CNPS 4.3
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
Is Calystegia collina subsp. venusta native to California?
Yes. Calystegia collina subsp. venusta is native to California (recorded as native).
When does Calystegia collina subsp. venusta bloom?
Calystegia collina subsp. venusta blooms Apr-Jun.
Where in California does Calystegia collina subsp. venusta grow?
Calystegia collina subsp. venusta occurs in Monterey, San Benito, Santa Barbara, Kern, Fresno, San Luis Obispo, at elevations of < 600 m.
What plant family does Calystegia collina subsp. venusta belong to?
Calystegia collina subsp. venusta is in the Convolvulaceae family, genus Calystegia.
Is Calystegia collina subsp. venusta rare or endangered?
Calystegia collina subsp. venusta carries California Rare Plant Rank 4.3, state rank S4.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CNPS Rare Plant Inventory · Index of California Plant Names · CalPhotos · 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.