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 20. Convolvulus glaouorum Braun-Blanquet & Maire, Bull. Soc. Hist. Nat. Afrique N. 13: 18. 1922. (Braun-Blanquet and Maire 1922: 18). Figure 5, t. 39-47 Convolvulus pitardii var. glaouorum (Braun-Blanquet & Maire) Sauvage et Vindt, Fl. Maroc 3: 28. 1954. ( Sauvage and Vindt 1954 : 28). Type. Based on Convolvulus glaouorum Braun-Blanquet & Maire Convolvulus mesatlanticus Andr., Ind. Hort. Bot. Univ. Budapest 1934: 112. 1934. ( Andreanzky 1934 : 112). Type. MOROCCO, Azrou, no details of collector or collection given (holotype BP?). Type. MOROCCO, Demnate, R. Maire s.n. (lectotype MPU 000022!, designated here; isolectotypes P!, AL?). Description. Perennial herb with relatively slender rootstock (c. 3 mm wide) from which emerge various short decumbent or ascending stems 5-15 (-20) cm long, vegetative parts pubescent. Leaves petiolate, 2-4 x 1-3 cm, dimorphic, lower leaves ovate-deltoid, obtuse, margin undulate to dentate, base truncate to shallowly cordate and shortly cuneate on the petiole; upper leaves somewhat smaller, strongly dentate, apex acute; petioles 1-5 cm. Flowers solitary on axillary peduncles; peduncles 0.3-2.5 cm long, very variable in length; bracteoles 4-6 mm, filiform; pedicels 1-2.5 cm, commonly flexuose; calyx in flower about as long as broad, outer sepals 4.5-7 x 3.5-6 mm, oblong-obovate, mucronate, adpressed pubescent; inner sepals c. 7 x 5 mm, broadly obovate, mucronate, soon scarious; corolla 2.6-3.3 cm, white or pink, unlobed, midpetaline band terminating in a point, nearly glabrous (slightly scabrous); filaments glandular below; ovary glabrous; style glabrous, divided 9 mm above base; stigmas 4 mm. Capsule glabrous; seeds finely tuberculate. [ Sa'ad 1967 : 231] Distribution. Endemic to Morocco: High Atlas ( Davis 54093, Davis & King 68145, 68533, Jahandiez 7, Whiting & Richmond 228, Weiller 270, Maire s.n. [8/4/1926], Podlech 45982, Guzman et al. s.n. [23/3/1989]) with isolated stations at Fez ( Trethewy 370) and Djebel Tazzeka ( Jury et al. 16800). Usually on limestone. Notes. Similar to Convolvulus vidalii and Convolvulus pitardii , differing from the former by presence of peduncles, the colouring of the corolla and larger sepals and from the latter by its dwarf habit and obovate sepals, the calyx only slightly longer than broad. The short, possibly ascending stems are characteristic. Whiting & Richmond 59 (BM) seems intermediate between this species and Convolvulus pitardii in indumentum and sepal form. It appears that the sheet with the original collection in Maire's herbarium was cut in two and part deposited at Montpelier. This part is selected as the lectotype. The other part of the sheet may be at AL. We have not been able to trace type material of Convolvulus mesatlanticus but the illustration provided by Andreanszky (1934 : 115) appears to be of Convolvulus glaouorum and this concurs with the opinion of Dobignard and Chatelain (2011 : 338).