Myriophyllum integrifolium (Hook.f.) Hook.f.

Tiny Water-milfoil

Fl. Tasman. 1: 123 (1856) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Annual marsh herb; stems erect or procumbent, 2–5 cm tall, mostly c. 0.5 mm diam., rooting only at the base. Leaves alternate, linear to terete, lowermost rarely trifid, 1.5–7 mm long, margins entire. Bracteoles linear, c. 0.3 mm long, straw-coloured; flowers solitary, sessile. Male flowers: sepals absent; petals 4, 0.4–0.5 mm long, red; stamens 2. Female flowers: sepals and petals absent; ovary 4-celled, styles sessile, stigmas white. Fruit globular, yellow-brown to reddish; mericarps ovoid, 0.6–1 mm long, smooth to minutely granular, apex oblique. Flowers Aug.–Jan.

CVU, DunT, GipP, Glep, Gold, GGr, HNF, HSF, LoM, MuF, MuM, NIS, OtP, VAlp, VRiv, VVP, WaP, Wim. Also SA, Tas. Scattered widely across northern and western Victoria but less common in the south-east. Grows in winter-wet depressions and other wet areas and is often inconspicuous amongst larger swamp plants.

See notes under Myriophyllum glomeratum.

Source: Jeanes, J.A. (1996). Haloragaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2017-08-16
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Distribution map


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Myriophyllum integrifolium in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Myriophyllum integrifolium in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Glenelg Plain present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Fans present native
Gippsland Plain present native
Otway Plain present native
Warrnambool Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Dundas Tablelands present native
Northern Inland Slopes present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Victorian Alps present native

State distribution

Distribution map
Western Australia
South Australia