Lepilaena bilocularis Kirk APNI*
Description: Delicate dioecious annual or short-lived perennial submerged aquatic from < 1 cm high to > 1 m long.
Leaves mostly alternate, almost opposite when subtending flowers; minute to 4 cm long, < 1 mm wide, 1-veined, apex truncate often with 3 ± distinct mucros; auriculate on female plants, ligulate on male plants.
Male flower with a cup-shaped perianth, c. 1 mm long; stamen 1, subsessile, apiculate, c. 2 mm long, 4-sporangiate. Female flowers shortly pedicellate; perianth segments 3, c. 2 mm long; carpels 3, free; style delicate, about as long as the mature ovary; stigma broad, deeply divided, nearly as long as the style.
Fruit retained in persistent perianth, ± cylindrical, 1–1.5 mm long, smooth or slightly tuberculate, the style base persistent.
Flowering: in warmer months.
Distribution and occurrence: Grows in non-coastal fresh or saline lakes or slowly flowing water.
NSW subdivisions: ST, NFWP
Other Australian states: Qld Vic. Tas. W.A. S.A.
Text by S. W. L. Jacobs
Taxon concept: Flora of NSW 4 (1993)
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