Convolvulus pseudocantabrica subsp. askabadensis (Bornm. & Sint.) Vved., Byull. Sredne-Aziatsk. Gosud. Univ. 11 (Suppl.): 16. 1925. (Popov and Vvedensky 1925: 16).

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 : 152

131b. Convolvulus pseudocantabrica subsp. askabadensis (Bornm. & Sint.) Vved., Byull. Sredne-Aziatsk. Gosud. Univ. 11 (Suppl.): 16. 1925. (Popov and Vvedensky 1925: 16). Figure 17, t. 21-26

Convolvulus askabadensis Bornm. & Sint., Beih. Bot. Centralbl. 20(2): 181. 1906. ( Bornműller 1906: 181). Type. TURKMENISTAN, Sintenis 1892 (holotype B†; isotypes BM!, E!, JE, K!, L, LE!, P!, STU).

Type.

Based on Convolvulus askabadensis Bornm. & Sint.

Distinguishing features.

Characterised by having oblong, acuminate sepals, c. 7 mm in length. Petrov 1935: 140 (plate); Nowroozi 2002: 51 (plate as Convolvulus pseudocantabrica ), 102 (map)

Distribution.

Apparently restricted to Iran and Turkmenistan: Northern Iran (Rechinger 1744, 53148, 55562, Schmid 6120, Wendelbo & Foroughi 12677, Sharif 39, Hewer 3823, Furse 2901), Turkmenistan (Meyer 642, Lipsky s.n. [25/5/1912], Litwinow 1646, Sintenis 798).

Notes.

Sa’ad (1967) erroneously considered Convolvulus askabadensis , rather than Convolvulus dianthoides , to be conspecific with Convolvulus pseudocantabrica , being possibly confused by Vvidensky’s description of a superfluous subsp. dianthoides . Both Petrov (1935) and Grigoriev (1953) treated these two taxa correctly.