Calystegia macrostegia subsp. amplissima

Island morning-glory, Island Morning-Glory

Family: Convolvulaceae · Type: perennial · Native

Conservation status: CNPS 4.3

Island morning-glory is a California native perennial found in the southern Channel Islands on rocky slopes and canyon walls at elevations generally below 100 meters. Flowering from February to July, this plant produces large white flowers with pale pink or lavender tints in delicate trumpet-shaped blooms 47 to 68 millimeters long. Growing with climbing or trailing stems that become nearly hairless with age, it spreads across rocky terrain with distinctive leaves featuring widely rounded sinuses and two to three-tipped lobes. Its leaves have a characteristically complex shape, with lobes arranged in a distinctive pattern and broad, rounded base. Large papery bracts surrounding the flower are widely ovate, 19 to 37 millimeters long, with strongly keeled or sac-like edges and rounded to pointed tips.

Habitat: Rocky slopes, canyon walls

Bloom period: Feb-Jul

Elevation: generally < 100 m

Bioregions: s ChI.

California counties: Santa Barbara, Los Angeles, Ventura, San Diego

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.