"Erect pubescent herbs. Leaves 2-4 x 1.5-2 cm, ovate or ovate-lanceolate, base obtuse, apex acute, membranous, sessile; stipule pectinate. Flowers white, verticillate in axillary fascicles, 4-merous. Bracteoles filiform. Calyx-tube small, unequally 4-lobed, larger 2 lobes c. 1 mm long. Corolla c. 1.5 mm long, funnel-shaped; lobes 4. Stamens 4, attached at throat. Ovary 2-locular, ovule 1-per locule. Capsule c. 1 mm long, ovoid, dehiscence circumcissile. Seeds 2, minute."