Leaves not to ± succulent, soft to ± rigid, ovate to linear, obtuse or acute, sometimes setose at the apex, sessile, connate at the base into a short sheath, slightly thickened and indexed at the margin, ± canaliculate above towards the apex, the apical ones ± dense.
Calyx slightly shorter or longer than the corolla or subequalling it; sepals lanceolate, acute to rather attenuate and nearly subulate, thin to somewhat thick, nearly hyaline to whitish or pale green, shortly connate at the base.
Stems ± woody towards the base or herbaceous throughout, 4-gonous above, either slender or somewhat thick throughout or only below, leafy from base to apex or leafless on the older parts.
Corolla whitish, yellowish or rose, turning reddish-brown on drying; petals oblong or ovate-oblong, connate at base up to 0·5 mm., folded upwards and appearing cuspidate there.
Flowers 5-merous, small, shortly pedicellate, in ± dense axillary fascicles shorter than to equalling or a little exceeding the subtending leaf, sometimes flowers solitary.
Moss-or lycopodium-like perennial herbs or sometimes dwarf undershrubs, totally glabrous or sometimes papillose on leaves, calyces and extremities of stem and branches.
Follicles 0·75-1 mm. long, contracted or shortly attenuate into a very short style.
Scales flabellate to spathulate.
Seeds 2 in each follicle.
Anthers ovate, yellow.