Wahlenbergia napiformis (A.Dc.) Thulin

Perennial or ? biennial herb from a taproot.. Stems usually few, erect, rarely ± decumbent or straggling, up to 0.2–1 m. tall, glabrous, hirsute or puberulous.. Leaves linear to lanceolate or very narrowly elliptic, up to 10–80 mm. long, 0.8–15 mm. wide, acute, glabrous or ± pubescent; margin cartilaginous, slightly revolute, ± undulate-dentate; midvein prominent beneath, lateral veins obscure or visible.. Inflorescence leafy, ± spike-like, sometimes very dense or sometimes with flowers ± loosely clustered in the upper leaf axils; flowers subsessile or on ± hirsute or glabrous up to 5(–23) mm. long pedicels.. Hypanthium 10-nerved, ± hirsute or glabrous.. Calyx-lobes 1.2–3.5 mm. long, ± hirsute or glabrous, usually with ± cartilaginous and sometimes shallowly denticulate margins.. Corolla 3.5–7.5 mm. long, blue, purplish, yellowish or whitish, split almost to the base into linear lobes, puberulous inside near the base, ± hirsute or glabrous outside.. Stamens with filament-bases ± broadly dilated, ciliate; anthers 1.6–2.8 mm. long.. Ovary 3-locular, subinferior to semi-superior; style about as long as the corolla, eglandular, hairy or rarely glabrous below; lobes 3, 0.4–0.8 mm. long.. Capsule 3-locular, 2.8–5.5 mm. long, 10-nerved; valves 3, 1.2–3 mm. long.. Seeds elliptic-oblong in outline, ± compressed and 2-faced, 0.4–0.7 mm. long, almost smooth.. Fig. 2/R, p. 6.