Brachystelma coddii has small, simple, dark green to blue-green, opposite leaves. They are ovate in shape and finely hairy. The margins are entire and faintly purplish. The leaf tips attenuate or are rounded while the leaf bases are rounded to lobed. The leaves grow on short petioles on purplish, prostrate stems that branch and creep.
The flowers are saucer-shaped with five star-like corolla lobes spreading to long narrow, attenuating tips. The corolla is cream coloured and hairy with scattered maroon, velvety or red spots. The corolla margin and lobe tips are also dark maroon. The flowers are about 2 cm in diameter.
The follicle, the fruit, is solitary, tapering to a beak (Smith, et al, 2017; Fabian and Germishuizen, 1982; iNaturalist).