Wahlenbergia collomioides (A.Dc.) Thulin

Annual or ? short-lived perennial herb, up to 1 m. tall.. Stems erect, rarely unbranched, ± hirsute or glabrescent.. Leaves sessile to subpetiolate, very narrowly elliptic to elliptic, 30–60 mm. long, 3–12(–17) mm. wide, acute, with cuneate base, ± hirsute; margin cartilaginous, undulate-dentate; upper leaves of ± the same size as the lower ones, forming a sort of involucre.. Inflorescences terminal, dense, head-like, round or somewhat elongated; flowers subsessile or sometimes with glabrous or hairy pedicels up to 4 mm. long.. Hypanthium obconical or hemispherical, glabrous or almost so, 5-nerved.. Calyx-lobes 2–4 mm. long, glabrous or ciliate.. Corolla 5–7 mm. long, white or blue, split almost to the base into lanceolate lobes, glabrous outside, ± puberulous inside near the base; tube 0.1–0.4 mm. long.. Filament-bases dilated, very shortly and densely ciliate; anthers 1.5–3 mm. long.. Ovary 3-locular, semi-inferior; style longer than the corolla, thickened in the upper part, eglandular, glabrous below; lobes 3, 0.6–0.8 mm. long.. Capsule 3-locular, 5-nerved; valves ± 1 mm. long.. Seeds elliptic in outline with acute ends, trigonous, 0.5–0.7 mm. long; testa almost smooth.