Triglochin pterocarpa W.V.F. n. sp. (Erstbeschreibung, p. 110) Roots tuberous; leaves numberous, form a thickened base; terete or semi-terete thoughout, flaccid, the upper portion floating; scapes terete almost as long as the leaves and bearing a spike-like raceme; flowers numberous, on very short pedicels; perianth-segments, 4-6, ovate or almost orbicular; anthers 6, all perfect; carpels 3, quite free from the base; not tapering upwards, all or 1-2 only ripening, the stigmas broad and slightly recurved; fruit sessile or shortly stipitate, compressed; oblong-lanceolate to lanceolate, falcate, terminating in a broad, usually straight beak, the inner and outer edges expanding into narrow longitudinal wings.Isdell and Charnley Rivers (W.V.F.).Leaves and scapes 2-5 or more feet in length. Inflorescence 4-12 in. long, perianth-segments 1-1 1/2 in. long; yellowish. Fruits 3/4 in. long, yellow or purplish when ripe.In still water.Affinity to T. procera R.Br.