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Leaves: lowermost reduced to appressed scales, developed ones ascending, often incurved, 3–8 × 0.4–1.2 mm, smaller upwards and passing into bracts, lanceolate to linear-lanceolate, very acute to acuminate, apiculate, margins sometimes very minutely scabridulous, midrib strongly raised on both surfaces.
Flowers either solitary or in 3-flowered cymules in the axils of each bract (often all solitary except for terminal cyme), 1–10 racemosely arranged at branchlet apices, the whole often forming a well branched panicle, often overtopped by younger growth.
Perennial herb with woody stolons; stems many, tufted, c. 120–300 mm tall, erect, well branched from base or higher, strongly ribbed by raised vascular strands terminating in midribs of leaves and bracts, leafy.
Perianth white or greenish-white within; tube 0.8–1.5 mm long, external glands obscure; lobes 1–1.8 × 0.6–1 mm, triangular, subacute, margins slightly inflexed, ± fimbriate-erose, especially in lower part.
Bracts (lowermost) 3–7 × 0.6–1 mm, leaf-like, adnate for c. 1 mm to pedicel or peduncle; bracteoles 2, similar to bracts but smaller.
Stamens inserted at base of lobes; filaments 0.4–0.7 mm long, nearly hidden by anthers; anthers 0.4–0.7 mm long.
Style 1–1.8 mm long; stigma reaching nearly or quite to top of anthers.
Fruit 2.5–3.5 × 2.5–3.5 mm, pallid, strongly ribbed and reticulate.
Pedicels (lowermost) 2–4(10) mm long.
