Wahlenbergia gracilenta

Single- or few-stemmed annual or ephemeral, hirsute, usually from base to upper leaves; stems ascending to erect, 2–50 cm long, simple or few-branched, often leafless in upper half; leaves opposite for at least 3 nodes, but usually becoming alternate, obovate to ovate near base, to narrow-lanceolate above, 1–40 mm long, 0.2–11 mm wide; margins entire or weakly callus-toothed, sometimes undulate. Hypanthium barrel-shaped to globose, 0.5–3 mm long, glabrous or hirsute; calyx-lobes erect, narrow-triangular to oblong, 0.5–4 mm long, glabrous or hirsute; corolla narrowly campanulate, blue (sometimes white or pink), tube 0.5–4 mm long, subequal to calyx-lobes, lobes elliptic, 1–5(–6) mm long, 0.5–2.5 mm wide, acute; style 0.5–5.5 mm long, usually constricted in upper third to half, lobes (2–)3, oblong. Capsule ellipsoid to globose, 1–7 mm long, 0.6–6 mm wide. Flowers mostly Sep.–Nov.