Calystegia macrostegia

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

Calystegia macrostegia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Solanales
Family: Convolvulaceae
Genus: Calystegia
Species:
C. macrostegia
Binomial name
Calystegia macrostegia
(Greene) Brummitt
Synonyms

Convolvulus macrostegius

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.

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References
  1. Calflora: Calystegia macrostegia
  2. USDA: Subordinate taxa of Calystegia macrostegia
  3. Las Pilitas Horticulture Database: Calystegia macrostegia (Island Morning Glory)


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