Calystegia occidentalis

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 occidentalis
Subspecies: C. o. subsp. fulcrata – C. o. subsp. occidentalis – C. o. subsp. tomentella
Name

Calystegia occidentalis (A.Gray) Brummitt, Ann. Missouri Bot. Gard. 52: 214 (1965).
Synonyms

Basionym
Convolvulus occidentalis A.Gray, Proc. Amer. Acad. Arts 11: 89 (1876).
Heterotypic
Convolvulus fruticetorum Greene, Pittonia 3: 333 (1898).
Convolvulus polymorphus Greene, Pittonia 3: 331 (1898).
Convolvulus purpuratus var. fruticetorum (Greene) House, Muhlenbergia 4: 55 (1908).
Convolvulus occidentalis subsp. fruticetorum (Greene) Abrams, Ill. Fl. Pacific States 3: 387 (1951).
Calystegia polymorpha (Greene) Munz, Suppl. Calif. Fl.: 85 (1968).

Distribution
Native distribution areas:

Continental: Northern America
Regional:Southwestern USA
Oregon to California

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 occidentalis in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2019 November 02. Reference page.
Hassler, M. 2019. Calystegia occidentalis. 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 online. Accessed: 2019 November 02. Reference page.
International Plant Names Index. 2019. Calystegia occidentalis. Published online. Accessed: November 02 2019.
Tropicos.org 2019. Calystegia occidentalis. Missouri Botanical Garden. Published online. Accessed: 02 November 2019.
USDA, ARS, Germplasm Resources Information Network. Calystegia occidentalis in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: chaparral false bindweed

Calystegia occidentalis is a species of morning glory known by the common name chaparral false bindweed.[1][2]

It is native to California and Oregon, where it grows in hilly and mountain habitat, such as woodland and chaparral slopes and the high Sierra Nevada.[3]
Description

Calystegia occidentalis is a woody perennial herb producing spreading or twisting and climbing branches, usually quite hairy in texture. The small leaves are up to 4 centimeters long and lobed into various spade or arrowhead shapes.

The inflorescence is one to four flowers atop a single peduncle, each bloom 2 to 5 centimeters wide and white to cream to yellow in color.
References

"Convolvulaceae_Calflora".
"Chaparral False Bindweed_Discovery Life".
"Calystegia occidentalis_Distribution_EOL".