Submerse aquatic herbs; rhizome creeping, monopodial, with many vascular bundles; each node with 1 or more unbranched or slightly branched roots and a short erect stem bearing 2– 3 leaves; scales scarious, ovate, acute. Leaf with broad sheath persisting longer than blade, scars open; blade subulate with single central and several pericentral vascular bundles and 6– 8 air channels. Inflorescence cymose; flower enclosed by reduced leaf with inflated sheath. Staminate flower stalked. Pistillate flower sessile. Fruit quadrangular in cross-section, with inconspicuous dorsal ridge; pericarp stony.
Worldwide: 2 species, one in the Caribbean and one in the Indo-Pacific Ocean.
Mozambique: 1 taxon. |
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