Convolvulus massonii F. Dietr., Nachtr. Vollst. Lex. Gaertn . 2: 377. 1816. (Dietrich 1816: 377).

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 : 108

76. Convolvulus massonii F. Dietr., Nachtr. Vollst. Lex. Gaertn. 2: 377. 1816. (Dietrich 1816: 377). Figure 11, t. 1-7

Convolvulus saxatilis Salisb., Prodr. Stirp. Chap. Allerton 124 (1796), nom. illeg., non Convolvulus saxatilis Vahl (1794). ( Salisbury 1796: 124). Type. MADEIRA, Masson s.n. (probably BM000839753).

Convolvulus suffruticosus Dryand., Hort. Kew ed. 2 [W.T Aiton] 1: 331. 1810, nom. illeg., non Convolvulus suffruticosus Desf. (1798). ( Aiton 1810: 331).

Convolvulus massonii Type. MADEIRA, Masson s.n. (holotype BM000839753!).

Convolvulus solanifolius Lowe, Trans. Cambridge Philos. Soc. 4: 22. 1831, nom. illeg., non Convolvulus solanifolius Spreng. (1824). ( Lowe 1831: 22). Type. MADEIRA, Lowe (whereabouts uncertain).

Bucharea maderensis Raf., Fl. Tellur. 4: 84. 1838. ( Rafinesque 1838: 84). Type. Based on Convolvulus suffruticosus Dryand. ex W.T.Aiton.

Convolvulus canariensis var. massonii (F. Dietrich) Sa’ad, Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 281: 250.1967. ( Sa’ad 1967: 250). Type. Based on Convolvulus massonii F. Dietr.

Type.

Based on Convolvulus suffruticosus Dryand.

Description.

Perennial undershrub with trailing or twining stems to 4 m, becoming woody below with age, the whole plant glabrous to thinly adpressed pilose on younger parts. Leaves petiolate, 4-11 × 1.5-6 cm, ovate, acute to shortly acuminate, entire, truncate to cordate at the base, more or less reticulate veined on abaxial surface, glabrous or nearly so; petioles 1.5-4 cm. Flowers 1-6, in very lax, pedunculate, axillary cymes; peduncles 3-6 cm; bracteoles 14 × 0.5-1 mm, filiform to linear; pedicels 15-30 mm; sepals 9-15 × 4-7 mm, obovate or oblanceolate, with a triangular apiculate apex; corolla 2-2.5 cm, white, unlobed, midpetaline bands pink, pilose; filaments glandular; ovary pubescent at apex, style pubescent, divided 4 mm above the base, stigmas 4 mm. Capsule large, acute c. 6 mm long, glabrous; seeds (immature), smooth, with pale reticulation. [ Jardim and Francisco 2000: 134 (photo)]

Distribution.

Endemic to Madeira (Mandon 180, Lowe 576, Press & Short 446), 400-1000 m.

Notes.

Very similar to Convolvulus canariensis but distinguished by its nearly glabrous leaves.