Pycnosphaera buchananii N.E.Br.

Annual or perennial herb 15–60 cm high.. Stem simple or branched near inflorescence, 2-ridged.. Leaves somewhat fleshy, midrib impressed above, prominent beneath; basal leaves in a rosette, deciduous, oblong-lanceolate or oblong-elliptic, 1.5–6 cm long, 0.5–0.8 cm wide, subacute; cauline leaves linear, narrowly lanceolate or elliptic, 30–43 mm long, 3–6 mm wide, subacute, decurrent.. Inflorescences terminal, in a head-like cyme; bracts subtending inflorescence linear, elliptic or subovate, 7–10 mm long, 1–3 mm wide, subobtuse.. Flowers sessile, pink, mauve, blue-violet to white.. Calyx unequal; lateral sepals oblong-elliptic, 3.2–3.7 mm long, 1–1.
 wide, strongly keeled; dorsal sepal oblong-obovate, 3.2–3.5 mm long, ± 2.4 mm wide, emarginate or slightly 3-lobed.. Corolla tube ± 3 mm long, basally hyaline, scabrid-denticulate inside; lobes elliptic or ovate-lanceolate, 1.8–2.6 mm long, 1–1.2 mm wide, acute.. Filaments ± 1.8–2 mm long, linear; anthers cylindric to ovoid, 0.8–0.9 mm long, minutely apiculate.. Ovary slightly ellipsoid, 1.5 mm long, 0.8–1.2 mm diameter; style ± 2.4 mm long; stigma with two linear branches, ± 1.4 mm long.. Capsule ellipsoid, 2–3.4 mm long, 2 mm diameter.. Seeds minute, surface pitted.. Fig. 10 (p. 37).

Of wet places