Erect herb or subshrub, laxly branched, 45–90 cm. high; roots with terminal tuberous swellings; sap of stems and roots, but not tubers, yellow.. Stems glabrous, often reddish, bearing prominent longitudinal ridges, 1–2 per mm.. Leaves sessile or with short (10–20 mm.) winged petiole, amplexicaul, auriculate, auricles often large, glabrous, chartaceous; lower leaf-blades obovate or oblong, 5–24 cm. long, 2–11 cm. wide, upper often narrowly oblong or lanceolate, smaller, 4–11 cm. long, 1–2.5 cm. wide.. Peduncles bearing abundant short hairs and dense stalked glands, often reddish; gland stalks up to 0.5 mm. long; pedicels 1 mm. long; bracts ovate-lanceolate or lanceolate, outer bract 2.5–8 mm. long, 1–2 mm. wide, acute, inner pair minute, less than 1 mm. long, usually glandular on under surface, both surfaces pilose, margins ciliate.. Calyx 8–10 mm. long, 1.5–2 mm. wide, seldom prominently ribbed, bearing sparse or abundant stalked glands more numerous towards the apex; stalks very thin, not rigid, often curved, 0.5–1 mm. long; calyx-teeth up to 1.5 mm. long.. Corolla-tube mauve or reddish, 15–27 mm. long, 1.7–2 times length of calyx; lobes bright deep blue, obovate to spathulate, 8–10 mm. long, 6 mm. broad, acute, with shortly excurrent central nerve.. Fig. 4, p. 10.
More
Leaves sessile or with short winged petioles, amplexicaul with large auricles. Lower leaf–blades obovate or oblong, 5–24 cm. long, 2–9 cm. wide, upper smaller, often narrowly oblong or lanceolate.
Corolla–tube mauve or reddish, 15–27 mm. long; corolla lobes bright deep blue, drying bluish–purple, 8–10 mm. long, 6 mm. broad, acute with shortly excurrent central nerve.
Calyx 8–10 mm. long, weakly to prominently ribbed, bearing numerous stalked glands, stalks often curved; calyx teeth up to 1–5 mm. long.
Erect herb or subshrub, much branched, to 90 cm. high.
Bracts ovate–lanceolate or lanceolate, glandular.
Peduncles bearing dense short–stalked glands.
Home
