Calystegia macrostegia subsp. amplissima

Brummitt

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.
Richard K. Brummitt† +
Brummitt +
Convolvulus macrostegius +
0–500 m. +
Bushy sites, grassy hillsides, rocky canyons, sand dunes. +
Flowering Feb–Aug. +
Calystegia macrostegia subsp. amplissima +
Calystegia macrostegia +
subspecies +