Annual, erect, slender, up to 20 cm high. Stem thin, in the upper part with erecto-patent branchlets, glabrous, leafy. Leaves alternate along the stem, sessile, ovate, subacute, 7-8 mm long, 4-5 mm wide, the floral leaves opposite (leaf and bract), attenuate. Flowers sessile in the axil of the leaf-like bracts. Calyx glabrous; tube very short; segments linear, acute, the 2 anterior ones connate into an oblong bifid lobe. Corolla rather large, rosy-purplish, without or with a few glandular hairs; tube about half as long as the calyx lobes; appendages of the throat not seen; segments oblong, not free, 4-4½ mm long, attenuate or abruptly acuminate, 4 of the segments connate into 2 bifid lobes, separated by a deep incision; labellum minute, deltoid-ovoid, without appendages. Column much exserted, geniculate, c. 5 mm long. Capsule linear, glabrous, c. 1.5 cm long.
Periodically wet grass-fields, under seasonal conditions, locally common, in Java at 20-30 m, in Sumba in a marsh at 500 m.
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