A more or less erect annual herb up to 60 cm. Stems glabrous or subglabrous. Petioles 2-3 mm long. Leaves very variable in shape and size, the blades of those of the main axis generally linear-oblong to linear and subacute to acute, of those of the lateral axes generally ovate or suborbicular and obtuse to rounded, 0.5-3 cm x 3-7 mm, remotely and coarsely denticulate, obscurely penninerved, evenly to sparingly pubescent or pilose. Stipules subulate, sometimes bifurcate, 1 mm long, glabrous, stramineous. Cyathia axillary, solitary, densely pubescent. Glands pectinately 3-5-lobed, the lobes linear, ochreous. Fruits shallowly trilobate, 4 x 3.5 mm, smooth, sparingly to evenly pubescent-pilose, pale green; styles generally persistent, undivided. Seeds oblong, 4 x 1.5 mm, verruculose, pale, grey, with a caruncle prolonged into 2 ligulate arms extending the length of the seed.