Kuntze, Rev. Gen. Pl. 2:429 (1891).
Synonymy: Villarsia geminata R. Br., Prod. Fl. Nov. Holl. 457 (1810); Limnanthemum geminatum (R. Br.)Griseb., Gen. Sp. Gent. 346 (1838, in error 1839); Nymphoides sp. aft. exiliflora sensu H. I. Aston, Aquatic plants of Australia 117 (1973).
, Nymphoides sp. aff. exiliflora (F.Muell.)Kuntze
Common name: Entire marshwort. (111. G. R. Sainty & S. W. L. Jacobs (1981) Waterplants of New South Wales, pp. 304, 305.)
Apparently annual; stems to 1 m long, floating, stoloniferous, often reduced to a few cm long on stranded plants; petioles 1-60 cm long; leaf blades more or less circular, sometimes very broad-ovate, entire, deeply cordate, 1-6 cm long.
Flowers in spaced pairs along a short inflorescence or the pairs loosely clustered on plants growing on mud; pedicels 1-7 rarely to 15 cm long; calyx 3-6 mm long; corolla 12-25 sometimes to 33 mm diam., yellow; corolla lobes usually 5 rarely 6, with broad laciniate wings, not keeled; stigmas 2 or 3, papillate.
Capsule 3-6.5 mm long, more or less equal to the calyx; seeds globular to slightly ellipsoid-globular, somewhat laterally compressed, 24-152 rarely only 5 per capsule, 0.6-0.95 mm long, black when mature, smooth or tuberculate, with a pale circular caruncle.
Shallow fresh water to 40 cm deep in swamps and streams; also thrives on saturated soil when stranded.
S.Aust.: KI. Qld; N.S.W.; Vic. New Guinea.
Flowering time: all months; chiefly Oct. — May in south — eastern Australia.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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