Althenia patentifolia (E.L.Robertson) T.D.Macfarl. & D.D.Sokoloff

Spreading Water-mat

Phytotaxa 317 (1): 58 (2017)

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v); listed in Flora and Fauna Guarantee Act 1988

Plant dioecious. Leaves not tapering distally; auricles 1.5–1.8 mm long; leaf margin entire; apex subtruncate with small central mucro. Female flowers with pedicel c. 5 mm long; stigmas narrow, obliquely funnel-shaped, 0.2–0.3 mm wide, margin slightly irregular. Male flowers with scales 3-lobed to fused and cup-shaped; anther mass 6-locular; pedicel up to c. 2.5 mm long at anthesis. Fruit c. 2 mm long (excluding style); fruiting pedicel 1.5–2.5 mm long, so fruit extended beyond the leaf-sheath. Flowers Nov.–Jan.

GipP, Glep, VVP. Also SA, Tas. Collected from near Streatham and Dundonnell. Occurs in brackish water of lakes.

The leaves of this species are held more or less at right angles to the stem.

Source: Conn, B.J. (1994). Zannichelliaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne (as Lepilaena patentifolia E.L.Robertson).
Updated by: Neville Walsh, 2018-03-01
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Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Althenia patentifolia in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Althenia patentifolia in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Glenelg Plain present native
Victorian Volcanic Plain present native
Gippsland Plain present native