Perennial, erect herb with simple stems arising from a knotty rhizome bearing scale-like cataphylls. Roots fibrous. Leaves alternate, distichous, sessile, multinerved; venation convergent. Flowers bisexual, pedicellate, 1 or several in bracteate, pedunculate cymes in upper leaf axils. Perianth actinomorphic; segments conduplicate in bud; nectaries present at base as paired appendages. Sepals and petals equal, free, articulated at base, pink. Stamens 6; filaments expanded at base; anthers extrorse, basifixed, dehiscing by slits. Ovary superior, 3-locular; ovules many, in 2 rows per locule; style 1 with 3 divergent stigmatic branches. Fruit a loculicidal capsule. Seeds many, strophiolate, yellow or brown.
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