familyConvolvulaceae
genusCalystegia
speciesCalystegia macrostegia
subspeciesCalystegia macrostegia subsp. amplissima
Calystegia macrostegia subsp. amplissima
Kew Bull. 35: 327. 1980.
Endemic
Treatment appears in FNA Volume 14.
Herbage puberulent or pubescent, glabrescent. Stems trailing or twining-climbing, to 900+ cm. Leaf blades broadly triangular, lobes 2(or 3)-pointed, basal sinus broadly rounded. Bracts broadly ovate, (19–)22–30(–37) × 17–30 mm, proximally keeled or saccate, apex acuminate to rounded. Flowers: sepals 16–25 mm; corolla 47–68 mm; stamens 23–32 mm.
Phenology: Flowering Feb–Aug.
Habitat: Bushy sites, grassy hillsides, rocky canyons, sand dunes.
Elevation: 0–500 m.
Discussion
Subspecies amplissima intergrades with subsp. macrostegia.
Selected References
None.
Lower Taxa
None.