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Perennial herb, 0.3-1.0 m high. Leaves lanceolate, upper surface scabrid, apex acute, margins entire, wavy; petioles up to 3 mm long; stipule sheath ± 2 mm long, with 2 short fimbriae, 0.5-2.0 mm long. Flowers in condensed, terminal inflorescence; pedicels up to 2 mm long in fruit. Calyx tube subglobose, glabrous to sparsely pubescent, lobed. Corolla pale blue to purple pink; tube up to 20 mm long, cylindrical or funnel-shaped, sparsely pilose. Stamens with anthers included or shortly exserted. Ovary 2-locular, with many ovules in each locule, sparsely pubescent; style glabrous or papillose, exserted; stigmas linear-oblong, densely papillate. Flowering time Nov.-Mar. Fruit ovoid-globose, up to 7 x 6 mm; calyx lobes ± persistent.
Perennial herb, 0.2-1.2 m high. Stems quadrangular. Leaves petiolate; blade narrowly ovate, 35-70 x 10-23 mm, ± rounded at base, apex acute; petioles up to 2 mm long; stipule sheath ± 2 mm long with 2 short fimbriae. Flowers: pedicels mostly very short; corolla with tube up to 18 mm long; pale blue, lilac or purplish pink; Oct.-Jun. Fruit an ovoid-globose capsule, 5-7 mm long, apex beaked.
Flowers in condensed terminal inflorescences on most upper branches, 2–4 cm. wide, closely surrounded by leafy bracts; pedicels up to 2 mm. long in fruit; occasionally an isolated axillary flower at lower node with pedicels to 5 mm., perhaps a reduced axillary branch.
Leaves 3.5–7 x 1–2.3 cm., lanceolate, narrowly tapering acute at the apex, ± rounded at the base, ± pubescent or glabrous save for midrib beneath; petiole up to 3 mm. long; stipule sheath ± 2 mm. long with 2 short fimbriae 0.5–2 mm. long.
Corolla pale blue, lilac or purplish pink; tube 1–1.7 cm. long, slightly widened at the apex for 4 mm., sparsely pilose-pubescent or ± glabrous, glabrous inside but with a ring of hairs at throat rim; lobes 2.5–4.5 x 1.5–2 mm., elliptic.
Perennial herb, 0.2-1.2 m high. Leaves 10-23 mm wide, rounded at base. Pedicels mostly very short. Corolla tube up to 18 mm long. Flowers pale blue, lilac or purplish pink.
Calyx tube subglobose, 1.5–2 mm. wide, glabrous to sparsely pubescent; lobes 2–5.5 x 0.8–1.5 mm., lanceolate, acute, ciliate.
Herb 0.2–1.2 m. tall, the stems quadrangular and woody at the base, pubescent or ± glabrous save at nodes.
Fruit 5.5–7 x 4.5–6 mm. including the hemispherical beak, ovoid-globose; calyx-lobes ± persistent.
Stigmatic branches 1–2 mm. long, just included or shortly exserted.
Anthers included.
