A foundation monograph of Convolvulus L. (Convolvulaceae) Author Wood, John R. I. Department of Plant Sciences, South Parks Road, University of Oxford, OX 1 3 RB, UK & Honorary Research Associate, Royal Botanic Gardens, Kew Author Williams, Bethany R. M. Department of Plant Sciences, South Parks Road, University of Oxford, OX 1 3 RB, UK & Department of Life Sciences, Natural History Museum, Cromwell Road, London SW 7 5 BD, UK Author Mitchell, Thomas C. Plant Biodiversity Research, Technische Universitaet Muenchen, Maximus-von-Imhof Forum 2, 85354 Freising, Germany Author Carine, Mark A. Department of Life Sciences, Natural History Museum, Cromwell Road, London SW 7 5 BD, UK Author Harris, David J. https://orcid.org/0000-0002-6801-2484 Royal Botanic Garden Edinburgh, 20 A Inverleith Row, Edinburgh EH 3 5 LR, UK Author Scotland, Robert W. Department of Plant Sciences, South Parks Road, University of Oxford, OX 1 3 RB, UK robert.scotland@plants.ox.ac.uk text PhytoKeys 2015 2015-06-18 51 1 282 http://dx.doi.org/10.3897/phytokeys.51.7104 journal article http://dx.doi.org/10.3897/phytokeys.51.7104 1314-2003-51-1 E76E3938E216FF804849B803C469FE14 576310 70b. Convolvulus leiocalycinus var. retrosepalus ( Sa'ad ) J.R.I.Wood & R.W.Scotland stat. nov. Figure 10, t. 9-14 Convolvulus retrosepalus Sa'ad , Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 281: 69. 1967. ( Sa'ad 1967 : 69). Type. AFGHANISTAN, Lindberg 317 (holotype W!). Distinguishing features. This differs from var. leiocalycinus by the narrowly lanceolate, reflexed sepals, c. 7 x 1 mm, the veins usually conspicuous. The leaves and ovary are glabrous. Distribution. Restricted to Afghanistan, Farah Province ( Hedge & Ekberg 7252, Hedge et al. 7739, Grey-Wilson & Hewer 557, Carter 824). Note. Intermediates with var. leiocalycinus occur quite frequently ( Grey-Wilson & Hewer 534, Podlech 21729, Rechinger 33380, Koie 4414). These are similar to var. retrosepalus in their lack of hairs but the sepals are obovate and spreading.