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Perennial ± erect herb, up to 70 cm tall, from a ± woody rhizome. Stems few, glabrous or ± hirsute at least towards the base, furrowed, usually with many long ± erect branches. Leaves few, widely scattered on the stem, lanceolate, 2-7(-22) mm long, 0.5-2(-6) mm wide, acute, glabrous or ± hirsute; margin cartilaginous, sparsely denticulate. Inflorescence lax; pedicels 1-5 cm long, glabrous or glabrescent. Hypanthium usually narrowly obconical, 10-nerved, glabrous. Calyx-lobes 1.5-4 mm long, entire or almost so, rarely ± ciliate. Corolla 8-10(-13) mm long, white or ± bluish, lobed to about 2/3 of the length, puberulous inside near the base, glabrous outside; tube 2-5 mm long. Stamens 4.5-7 mm long; filament-bases markedly dilated to almost cross-shaped, ciliate; anthers 2.5-4 mm long. Ovary 2-locular, subinferior. Style shorter than the corolla, thickened in the upper part, glabrous below; lobes 2, ± 1.5-2.5 mm long, with 2 or 4 glands present between and, if 4, also below their bases. Capsule 2-locular, usually narrowly obconical, 4-10(-16) mm long; valves 0.8-1.6 mm long. Seeds narrowly oblong to elliptic in outline, 0.5-0.9 mm long; testa reticulate.
Perennial herb, up to 0.7 m high. Stems erect, simple or branched. Leaves few and inconspicuous, often scale-like, usually < 7 mm long and 2 mm wide. Flowers: corolla 8-10 mm long, with distinct tube, white or pale blue or mauve or yellowish; ovary 2-locular; Sep.-May.
Ovary 2–locular, subinferior; style shorter than the corolla, thickened in the upper part, glabrous below; lobes 2, c. 1·5–2·5 mm. long with 2 or 4 glands present between and, if 4, also below their bases.
Leaves 2–7(22) x 0·5–2(6) mm., alternate, few, often scale–like, widely scattered on the stem, lanceolate, acute, glabrous or ± hirsute; margin incrassate, sparsely denticulate.
Corolla 8–10(13) mm. long, white, ± bluish or yellowish, lobed to c. 2/3 of the length, puberulous inside near the base, glabrous outside; tube 2–5 mm. long.
Erect, perennial herb, up to 0.7 m high. Leaves few and inconspicuous, usually less than 7 mm long and 2 mm wide. Testa reticulate. Flowers white or blue.
Stems few, glabrous or ± hirsute at least towards the base, furrowed, usually with many long ± erect branches.
Stamens with filament–bases markedly dilated to almost cross–shaped, ciliate; anthers 2·5–4 mm. long.
Capsule 4–10(16) mm., long, 2–locular, usually narrowly obconical; valves 0–8–1–6 mm. long.
Seeds 0·5–0·9 mm. long, narrowly oblong to elliptic in outline; testa reticulate.
Perennial ± erect herb, up to 70 cm. tall, from a ± woody taproot.
Calyx–lobes 1·5–4 mm. long, entire or almost so, rarely ± ciliate.
Inflorescence lax; pedicels 1–5 cm. long, glabrous or glabrescent.
Hypanthium usually narrowly obconical, 10–nerved, glabrous.
