Calystegia sepium subsp. americana(Sims) Brummitt (redirected from: Calystegia sepium var. americana (Sims) Matsuda)
Family: Convolvulaceae
[Calystegia americana (Sims) Daniels, moreCalystegia sagittata Turcz., Calystegia sepium var. americana (Sims) Matsuda, Calystegia sepium var. communis (Tryon) H.Hara, Calystegia sepium var. integrifolia Liou, Calystegia spectabilis (Brummitt) Tzvelev, Convolvulus americanus (Sims) Greene, Convolvulus sepium L., Convolvulus sepium var. americanus Sims, Convolvulus sepium var. communis Tryon]
Japan Flora: Rhizomes creeping; stems twining; leaves long-petiolate, subhas- tate, deltoid-ovate to deltoid, 4-8 cm. long, 3-7 cm. wide, with an obtusely angled lateral lobe on each side near base, acute to abruptly acuminate, mucronate, cordate; flowers solitary, long- pedunculate, the bracts ovate, shallowly cordate, 2-3 cm. long; corolla rose-colored.
Hokkaido, Honshu. Temperate regions of the N. Hemisphere.