藤长苗 (原变种) teng chang miao (yuan bian zhong)

Convolvulus pellitus Ledebour, Fl. Altaic. 1: 223. 1829; Calystegia dahurica (Herbert) Choisy; C. dahurica var. pellita (Ledebour) Choisy; Convolvulus dahuricus Herbert.

Stems prostrate to weakly climbing. Leaves mostly narrowly triangular, 1.5--3 cm wide, ca. 3 X as long as wide, base truncate to slightly hastate or weakly lobed; major lateral veins 3--5 per side.

Heilongjiang, ?Nei Mongol [?Mongolia, Russia]

A seldom collected taxon with very few collections from China; most collections are from eastern Russia from Irkutskaya to Primorsk. One early specimen at Kew, labelled "Gehol, Chine/ Mongolie Orientale, Abbé David," cannot be placed with certainty in the provincial scheme for modern China. In 1955, the former province of Jehol was divided among Hebei, Liaoning, and Nei Mongol and it is unclear to which of these provinces the Abbé David specimen should correctly be referred. Based on our very limited knowledge of this subspecies range, one would expect it to occur in Nei Mongol, and this province has been listed with a question mark. More collections are needed for this taxon.