Convolvulus chinensis subsp. chinensis

Wood, John R. I., Williams, Bethany R. M., Mitchell, Thomas C., Carine, Mark A., Harris, David J. & Scotland, Robert W., 2015, A foundation monograph of Convolvulus L. (Convolvulaceae), PhytoKeys 51, pp. 1-282 : 51

5a. Convolvulus chinensis subsp. chinensis

Convolvulus bicuspidatus Fisch. ex Link, Enum. Hort. Berol. 1: 201. 1821. ( Link 1821: 201). Type. RUSSIA, Siberia, “Dahurica”, Fischer s.n. (B†).

Convolvulus arvensis var. sagittatus Ledeb., Fl. Altaic. [Ledebour] 1: 225. 1829. ( Ledebour 1829: 225). Type. RUSSIA, based partially on Fischer specimen (?LE).cited in Cat. Hort. Gorenk. 28. ( Fischer 1808).

Convolvulus arvensis var. crassifolius Choisy, Prodr. [A.P. de Candolle] 9: 406. 1845. ( Choisy 1845: 406). Type. MONGOLIA, Meyer & Turczaninov (lectotype G-DC, designated by Sa’ad 1967: 218).

Convolvulus sagittifolius Fisch. ex T.Liou & Y.Ling, Fl. Ill. Nord Chine 1: 17. 1931, nom. illeg., non Convolvulus sagittifolius Michx. (1803). ( Liou and Ling 1931: 17). Type. Based on Fischer specimen (?LE); cited in Cat. Hort. Gorenk. 28. ( Fischer 1808).

Convolvolus fischerianus Petrov, Byull. Moskovsk. Obshch. Isp. Prir., Otd. Biol., n.s., 44: 147. 1935. ( Petrov 1935: 147). Type. not specified, possibly Fischer s.n. (LE, not seen).

Distinguishing features.

Distinguished by the decumbent habit and distinctive strap-shaped leaves, the central lobe elongated.

Distribution.

Very common in northern China, Mongolia and Siberia becoming rare in Kazakhstan, where it is largely replaced by Convolvulus arvensis . Russia: Siberia (Elias, Shetler & Murray 7606, Turkewitsch 1043, Kuznezow 2709, Timokhina & Danilyuk 1249, Shiskin 332, Castroviejo 14317); Mongolia (Pobedimova 1323, Campbell 1901); Northern China (David 1851, Chaffanjon 1662, Rock 14359, Ho et al. 120, R. C. Ching 171, Williams 10515, Licent 120, Petrov s.n. [25/6/1957]); Kazakhstan (Tsvelev et al. 777).