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Corolla white or tube green and lobes pale lilac, sometimes with a double mauve spot on each; tube 3.2–4.5 x 0.4–0.9 mm., very narrowly cylindrical; lobes 0.4–1.8 x 0.4–1.2 mm., broadly elliptic.
Flowers not heterostylous, arranged in small heads 4 mm. wide, terminal or axillary, the heads often in threes; peduncle 0.2–1.5 cm. long; pedicels 0–1.2 mm. long.
Calyx tube 0.5 mm. long, subglobose, densely covered with short spreading hairs; lobes 0.7–2 x 0.5 mm., lanceolate, ciliolate on the margins and midvein.
Erect branched or unbranched annual herb 2–40 cm. tall; stems glabrous or scabrid-papillate on the ribs.
Capsule ± biglobose, 1.5 x 2.2 mm., densely covered with short spreading bristly hairs.
Seeds black, c. 0.5 mm. long, ellipsoid, strongly reticulate.
Style 1.7–5 mm. long; stigmatic lobes 0.4–1.2 mm. long.
Erect herb 3-18 in. high
Flowers white
