Convolvulus fruticulosus subsp. fruticulosus

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 : 111-112

81a. Convolvulus fruticulosus subsp. fruticulosus Figure 11, t. 15-23.

Convolvulus perraudieri Coss., Bull. Soc. Bot. France 3: 58. 1856. ( Cosson 1856: 58). Type. CANARY ISLANDS: Perraudière s.n. (holotype P00417707; isotypes FI, K, P).

Rhodorrhiza perraudieri (Coss.) Bolle, Bonplandia 9: 54. 1861. ( Bolle 1861: 54). Type. Based on Convolvulus perraudieri Coss.

Convolvulus venosus Hallier f., Bot. Jahrb. Syst. 18: 109. 1893 [ “1894”], nom. illeg., non Convolvulus venosus Desr. (1792). ( Hallier 1894: 109). Type. Based on Convolvulus fruticulosus Bolle (1861: 54), whose typification is unclear being apparently based at least particially on Convolvulus fruticulosus Desr.

Rhodorrhiza subauriculata Burchard, Repert. Spec. Nov. Regni Veg. 13: 57. 1913. ( Burchard 1913: 57). Type. CANARY ISLANDS, Gomera, Burchard s.n. (type location unknown).

Convolvulus subauriculatus (Burchard) Linding., Abh. Auslandsk., Reihe C, Naturwiss. 8: 190.1926. ( Lindinger 1926: 190). Type. Based on Rhodorrhiza subauriculata Burchard

Distinguishing features.

Characterised by the obtuse to subacute outer sepals. Plants are almost always densely tomentellous and leaves usually subcordate.

Distribution.

Endemic to the Canary Islands: Tenerife ( Bornmüller 2612, Asplund 4680, Murray s.n. [4/5/1899], Acebes et al. s.n. [1/5 1976]), La Gomera (Carine & Santos Guerra 197, 198).

Notes.

Plants referred to Convolvulus perraudieri differ from the the type of Convolvulus fruticulosus in having somewhat larger leaves, 3-5 × 0.6-1.4 cm, and cymose flowers with a distinct peduncle but, at least in the Santa Cruz area of Tenerife, occur very close to, if not together with smaller leaved plants, in which the peduncle is suppressed.