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 144. Convolvulus urosepalus Pau, Trab. Mus. Ci. Nat., Ser. Bot. 14: 27. 1918. (Pau 1918: 27). Figure 19, t. 9-15 Type. IRAN, de la Escalera s.n. (holotype MA-94152!). Description. Similar to Convolvulus acanthocladus . Stems erect, straight and spreading at a very acute angle to the main axis, grey-sericeous and pilose with spreading hairs, branches spine-tipped but lateral spines lacking. Leaves linear, 5-15 x 1-2 mm. Flowers solitary or paired in the uppermost leaf axils, sessile, characteristically overtopped by the spinescent branches; sepals 12-13 mm long, similar in shape to those of Convolvulus acanthocladus but more abruptly caudate with a pronounced apical mucro and distinctly longer; corolla c. 2.5 cm long, white but pinkish in bud. [ Rechinger 1961 : 22; 1963 : 25; Nowroozi 2002 : 25 (plate), 100 (map)] Distribution. Endemic to Iran ( Koelz 18056).