Plants annual or short-lived perennial, often densely matted; taproot filiform to slender. Stems prostrate to ascending, dichot-omously branched, 5-20 cm, often retrorsely pubescent on 1 side. Leaves: stipules ovate-lanceolate, 1-1.5 mm, apex obtuse to acuminate, fimbriate; blade oblong to triangular-ovate, 1.5-6 × 0.5-1.5 mm, leathery, apex acute to obtuse, glabrous. Cymes terminal, 7-25+-flowered, much-branched and very profusely developed along all branches, 1.5-20 mm wide. Flowers 5-merous, occasionally 3-or 4-merous, obconic to short-campanulate, with gradually expanded hypanthium and calyx widening distally, 0.5-0.8 mm, pubescent proximally with straight to hooked hairs; sepals brown-purple, white to greenish at apex, sometimes proximally, veins absent, ± oblong, 0.5-0.7 mm, leathery to rigid, margins whitish to translucent, 0.1-0.2 mm wide, scarious, apex terminated by crest or mucro, hood broadly rounded, mucro rounded-triangular, ca. 0.1 mm, glabrous; staminodes absent or rudimentary; styles 2(-3), ca. 0.3 mm. Utricles ovoid or ellipsoid to subglobose, 0.4-0.5 mm, smooth, glabrous.
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