Convolvulus glaouorum Braun-Blanquet & Maire, Bull. Soc. Hist. Nat. Afrique N. 13: 18. 1922. (Braun-Blanquet and Maire 1922: 18).

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 : 63-64

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. ( Andreánzky 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 × 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 × 3.5-6 mm, oblong-obovate, mucronate, adpressed pubescent; inner sepals c. 7 × 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, Guzmán 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 Andreánszky (1934: 115) appears to be of Convolvulus glaouorum and this concurs with the opinion of Dobignard and Chatelain (2011: 338).