2. Dioscorea edulis (Lowe) Campos, Wilkin & Viruel,comb. nov. (= Clade DC1)
=Basionym: Tamus edulis Lowe, Trans. Cambridge Philos. Soc. 4: 1. 1833.
–Type: Portugal, Madeira, Pta Moniz, 7 May 1828, Herb. Lowe 504 (K; K000099334!, K001081657!).
Heterotypic synonyms:
= Tamus canariensis Willd. ex Kunth, Enum. Pl. 5: 455. 1850, nom. illeg. pro syn. Type: Spain, Canary Islands, Herbarium Willdenow no 18374 (B-W).
= Tamus parviflora Kunth, Enum. Pl. 5: 454. 1850. Holotype: Spain, Canary Islands, Teneriffa, ex Museo Paris, 1821 (B 10 0160963!), male plant.
Perennial herb, glabrous. Leaves varying from cordiform to sagittate, petiole 1.60–3.88 cm, leaves up to 125 × 110 mm, slightly wavy, coarse, chartaceous and secondary veins visible, but not prominent. Male inflorescence compound is arranged in fascicles of three or four flowers, compound inflorescence up to 12 cm in length and bearing up to 65 flowers in total. Female flowers composed of six violaceous tepals with erect filaments. Fruit a globose berry, 6–12 × 1–8 mm, reddish-orange. Pollen grains (Supplementary Data Figure S8) with two apertures with longer axis up to 36 µm and shorter axis up to 18 µm. Perforated with 3.9 perforations per µm and perforation size up to 0.37 µm, without spines. Macaronesia (Madeira, Gran Canaria, Tenerife, Gomera, Hierro, La Palma). 2n = 36, 48.