Convolvulus fruticulosus subsp. glandulosus (Webb) J.R.I.Wood & R.W.Scotland, 2015

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 : 112

81b. Convolvulus fruticulosus subsp. glandulosus (Webb) J.R.I.Wood & R.W.Scotland stat. nov.

Rhodorrhiza glandulosa Webb, Edwards’Bot. Reg. 27(Misc.): 70. 1841. (1841: 70, full description in Webb and Berthelot 1844: 32). Type. CANARY ISLANDS, Gran Canaria, portion of sheet 132087 ( Despréaux 1) consisting of two shoots covered by collector’s label from "Roches del Barranco de las flores G. C. May 1839" to which the label “TYPUS” is affixed (lectotype FI, designated here).

Convolvulus glandulosus (Webb) Hallier f., Bot. Jahrb. Syst. 18: 102. 1894 [pub.1893]. ( Hallier 1894: 102). Type. Based on Rhodorrhiza glandulosa Webb

Convolvulus fruticosus var. glandulosus (Webb) Sa’ad, Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 281: 251. 1967. ( Sa’ad 1967: 251). Type. Based on Rhodorrhiza glandulosa Webb

Type.

Based on Rhodorrhiza glandulosa Webb

Distinguishing features.

Best distinguished from subsp. fruticulosus by the narrowly ovate or oblong-ovate, acuminate (and apiculate) sepals. Additionally the leaves are rounded or truncate at the base and both leaves and sepals are commonly glabrous to thinly pubescent. The ovary and style vary from glabrous to hirsute.

Distribution.

Endemic to the Canary Islands: Gran Canaria, La Palma, 500-1000 m.

Notes.

Indumentum varies from nearly completely glabrous (Carine & Durães 163, 165, Bramwell & Humphries 3040, Bramwell 1177), to thinly pubescent with somewhat crisped hairs (Murray s.n. [9/5/1894]) and to densely tomentellous (Lowe s.n. [28/5/1875], Bramwell 1905).