Halophila decipiens
Ostenf. Sea-wrackMonoecious herb, glabrous. Scales 3–5 mm long. Leaves delicate, bright green; petiole 3-angled in cross-section, usually shorter than lamina; lamina narrowly oblong-elliptic, 1–1.5(–2.5)cm long, 0.2–0.4(–0.6) cm wide; margin finely and minutely toothed; crossveins 5–7(–9) pairs. Floral bracts 3–7 mm long, enclosing one male and one female flower. Male flower with pedicel 4–8 mm long at anthesis; perianth 1–1.5 mm long. Female flower sessile; hypanthium 1–2 mm long; perianth minute, c. 0.1 mm long; styles 3. Fruit 3–5 mm long. Flowers Nov.
EGL. Also WA, NT, Qld, NSW. In Victoria known from a single collection in the Mallacoota Inlet (1981). A widespread pantropical species.
Conn, B.J. (1994). Hydrocharitaceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons, pp. 129–136. Inkata Press, Melbourne.