Chironia serpyllifolia Lehm.

A much branched herb, slightly woody at the base, with slender wiry stems and branches, 20-50 cm tall, erect or straggly; branches quadrate or subterete. Leaves small, 2-7 mm long, 1-4 mm broad, broadly to narrowly ovate-oblong or sometimes the upper ovate-lanceolate, broad based, obtuse or shortly acuminate to an acute apex, spreading to reflexed with the apical portion ascending and the apex reflexed. Inflorescence terminal, flowers solitary or in 2-3-flowered cymes; the average pedicels 1-2 cm long. Calyx 6-8 mm long, almost as long as to shorter than the corolla tube, lobed almost to the base, lobes obscurely or distinctly keeled. Corolla 1.5-1.9 cm long, dehiscent by an irregular cut near the base; tube cylindrical, very shortly stipitate, about 8 mm long, distinctly narrowed at the neck and slightly widened at the mouth, many nerved; lobes elliptic to ovate-lanceolate, about 9 mm long. Stamens inserted about 2 mm below the rim of the corolla-tube; filaments 2-5 mm long; anthers straight 2.75 mm long. Ovary elliptic in outline, about 8 mm long, acuminate into the style; style about 6 mm long; stigma terminal, lobes about 2 mm long, more or less linear-terete, usually cohering except at apex. Capsule pointed, subtransparent, shiny, splitting in two from the apex; seeds small, deeply honey-combed.