Convolvulus sabatius Viviani (1824: 67)

Carine, Mark A. & Robba, Lavinia, 2010, Taxonomy and evolution of the Convolvulus sabatius complex (Convolvulaceae), Phytotaxa 14, pp. 1-21 : 17

3. Convolvulus sabatius Viviani (1824: 67)

Holotype: ITALY. West Liguria, Capody Noli near Vada Sabatia , Viviani s.n. (GE; isotype: G-DC (microfiche!))

Stems villous. Leaves with petioles up to 3 mm long; lamina broadly oblong, elliptic or orbicular, up to 18 mm long × 18 mm wide; apices obtuse, occasionally emarginated or acute; pilose on lower leaf surface; upper surface variable, from glabrous to pilose. Flowers solitary or rarely paired. Peduncles 5–25(–31) mm long, villous. Pedicels 2–10 mm long, villous. Bracteoles lanceolate to elliptic, 3–12 mm long × 1–3.5 mm wide. Calyx lobes narrowly elliptic to lanceolate, 4.5– 8 mm long × 1.5–3.5 mm wide; apices acute. Corolla 12–22 mm long, lilac-blue or blue-pink above, with a yellow centre and a white ring separating the two. Stamens with filaments 6–8 mm long on the shorter three and 7.5– 10 mm long on the longer pair, variable for pubescence with some individuals apparently glabrous and others glandular pubescent for two thirds of total length; anthers 2–3 mm long on the longer filaments; 1.5–2.5 mm on the shorter filaments. Ovary narrowly conical, 1–1.5 mm long, white, glabrous. Style white, 3–4 mm long. Stigma lobes 4–5 mm long, longer than the style.