Philydrum lanuginosum Banks ex Gaertn.
Gaertner, J. (1788) De Fructibus et Seminibus Plantarum 1: 62. Type: Queensland, Endeavour River, leg. J. Banks et D. Solander (17.VI. 4.VIII.1770). (BM).
Tufted aquatic herbs up to 1 m tall with a short rhizome and fibrous roots.
Flowering stem scapose, slender, terete, up to 1m tall, glabrescent proximally, villous toward inflorescence. Spikes simple, sometimes branched, woolly; bracts large and conspicuous, ovate, 2-7 × 0.7-1 cm, abaxially woolly, apex abruptly acuminate and subulate. Outer 2 perianth segments subovate, 8-10 mm, abaxially woolly, base with 2 strong veins, margin undulate, apex acute; inner 2 segments smaller than outer 2, spatulate, membranous, veins 3, base adnate to filament for 1-2 mm, apex acute. Stamen 6-9 mm, glabrous; filament flattened; anther subglobose, cochleate. Ovary 6-7 mm, densely long woolly. Style 3-4 mm, glabrous; stigma dark reddish, capitate, 0.7-0.9 mm, long papillose.
Features not available.
Occurs in WA, NT, CYP, NEQ, CEQ and southwards to Victoria. Altitudinal range from near sea level to 650 m. Grows as an aquatic macrophyte in swampy areas and in stream beds in rainforest, Melaleuca swamp, Eucalypt forest, various types of woodland and heathland. Also occurs in India, Japan, Malaysia, Myanmar, Papua New Guinea, Thailand, Vietnam and the Pacific Islands.