Dwarf herbs, creeping, much branched, rather fleshy; branches flattened to angled, glabrous or puberulent, often rooting at nodes. Leaves subsessile to shortly petiolate; petiole to 1[-4] mm; blade drying stiffly papery, oblong-lanceolate, oblanceolate, or spatulate, 4-7[-10] × 1-2[-4] mm, glabrous or sparsely hirtellous at least along margins and principal veins, base cuneate to acute, margins flat, apex obtuse to acute; secondary veins not visible; stipules triangular, ca. 1 mm, entire to erose. Flowers solitary at forks of branchlets or rarely along stems, subsessile or with pedicel to 1[-2] mm. Calyx with ovary portion subglobose, ca. 1 × 1-1.5 mm, densely papillose-villous with flattened trichomes; limb 1-1.2 mm, deeply lobed; lobes narrowly triangular. Corolla white or pale yellow, 3-8[-12] mm, glabrous outside, sparsely villous inside throat; lobes triangular-ovate, 1-2 mm, acute. Fruit compressed globose, 3-5 × 3-5 mm, densely villous with multicellular, transparent, flattened, bulbous-tipped trichomes; seeds 0.3-0.5 mm. Fl. winter, fr. summer.
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A spreading annual herb. It lies along the ground and spreads 0.5 m wide. The stems root at the nodes. The leaves are 0.6-1 cm long by 0.2-0.3 cm wide. They are bright green. The flowers are about 1 cm across and like tubes. They are white and grow in the axils of leaves. They occur singly and are without stalks. They have 5 lobes. The fruit is a round capsule which is green.