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Leaves 7–16 x 2–5 mm., subcircular to elliptic at the base of the plant; gradually narrowing upwards to the linear–oblong bracts, obtuse to acute, denticulate, glabrous or with a few short stout hairs mainly on midvein beneath.
Corolla 3·5–4·5 mm. long, blue with darker markings and two bumps in the mouth of the tube, split practically to the base on the back, pubescent inside on the bottom of the tube.
Anther–tube ± 0·8 mm. long, sparsely and shortly pubescent on the back of the upper thecae, the two lower anthers each with a tuft of hairs and a hyaline appendage at the apex.
Flowers in lax leafy racemes; pedicels 4–7 mm. long, glabrous, papillose or with a few short hairs; bracteoles linear, 0·4–0·5 mm. long, at or near base of pedicel.
Filaments linear, the 2 lower pubescent at the base, connate for most of their length, attached to the corolla–tube at the base.
Calyx–lobes narrowly triangular, erect, 1·4–2·8 mm. long, entire, glabrous or with a few short hairs on the midvein outside.
Stem not or sparsely branched, triangular with broadly winged eges, glabrous or with a few short and stout hairs.
Capsule subglobose, 8–10–nerved with 2 valves ± 1 mm. long, inferior part of capsule 2–2·5 mm. long.
Seeds elliptic–oblong in outline, somewhat compressed, 0·4–0·45 mm. long, almost smooth, brown.
Hypanthium subglobose, 8–10–nerved, glabrous or with short retrorse hairs.
Annual, ± erect herb, 8–30 cm. tall.
Ovary semi–inferior.
