Limonia

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Solanales

Familia: Convolvulaceae
Tribus: Convolvuleae
Genus: Calystegia
Species: Calystegia macrostegia

Subspecies: C. m. subsp. amplissima – C. m. subsp. arida – C. m. subsp. cyclostegia – C. m. subsp. intermedia – C. m. subsp. macrostegia – C. m. subsp. tenuifolia
Name

Calystegia macrostegia (Greene) Brummitt, Ann. Missouri Bot. Gard. 52: 214 (1965).
Synonyms

Basionym
Convolvulus macrostegius Greene, Bull. Calif. Acad. Sci. 1: 208 (1885).
Homotypic
Volvulus macrostegius (Greene) Farw., Amer. Midl. Naturalist 12: 130 (1930).
Convolvulus occidentalis var. macrostegius (Greene) Munz, Man. S. Calif. Bot.: 387 (1935).

Distribution
Native distribution areas:

Continental: Northern America
Regional:Southwestern USA
California (incl. Channel Is.)
Regional:Mexico
Mexico (Baja California, Guadalupe I.)

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Brummitt, R.K., 1965. Annals of the Missouri Botanical Garden. St. Louis, MO 52:214.

Links

Govaerts, R. et al. 2019. Calystegia macrostegia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2019 November 02. Reference page.
Hassler, M. 2019. Calystegia macrostegia. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2019. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2019 November 02. Reference page.
International Plant Names Index. 2019. Calystegia macrostegia. Published online. Accessed: November 02 2019.
Tropicos.org 2019. Calystegia macrostegia. Missouri Botanical Garden. Published on the internet. Accessed: 2019 November 02.
USDA, ARS, Germplasm Resources Information Network. Calystegia macrostegia in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Island false bindweed

Calystegia macrostegia, with the common names island false bindweed and island morning glory, is a species of morning glory in the family Convolvulaceae.

Distribution

The plant is native to California coastal sage and chaparral habitats, along the coasts in Southern California and into Baja California, Mexico.

It is found on all the Channel Islands, source of its common names. It is also commonly found in the Peninsular Ranges, Transverse Ranges, and Outer Southern California Coast Ranges.
Description

Calystegia macrostegia is a woody perennial herb or small shrub which may be a low herbaceous vine or a stout, woody, climbing plant which can approach 9 metres (30 ft) in length. The triangular leaves may be over 10 centimeters wide.

The vine produces white, to very pale pink, to lavender blooms, often according to drought or temperature. The corollas are 2–6 centimetres (0.79–2.36 in) or more in width.
Subspecies

Subspecies include:[1][2]

Calystegia macrostegia ssp. amplissima
Calystegia macrostegia ssp. arida
Calystegia macrostegia ssp. cyclostegia
Calystegia macrostegia ssp. intermedia
Calystegia macrostegia ssp. macrostegia
Calystegia macrostegia ssp. tenuifolia

Cultivation

Calystegia macrostegia is cultivated as an ornamental plant, used as a vine and groundcover in native plant, drought tolerant, and wildlife gardens.[3] It is a pollinator plant for native bee species.
References

Calflora: Calystegia macrostegia
USDA: Subordinate taxa of Calystegia macrostegia
Las Pilitas Horticulture Database: Calystegia macrostegia (Island Morning Glory)