Myriophyllum simulans Orchard APNI*
Description: Perennial herb, aquatic or fully emergent; stems mostly 1–2 mm diam., rooting at the nodes.
Emergent leaves in whorls of usually 3 or 4 or irregularly arranged, linear to terete, 5–15 mm long, up to 2 mm wide (wider in pinnatifid leaves), entire, toothed or divided into narrow segments.
Plants monoecious; male and female flowers often on separate shoots, solitary in the axils. Male flowers sessile; sepals linear to lanceolate; petals 2.5–3 mm long, reddish. Female flowers sessile; sepals and petals absent; stigmas red or pink. Mericarps ovoid, up to 1 mm long, usually deep reddish purple, rounded and sharply tuberculate.
Distribution and occurrence: in still water, or more frequently, fully emergent on mud.
NSW subdivisions: NC, CC, SC, NT, CT, ST, SWS, NWP, SWP, SFWP
Other Australian states: Qld Vic. Tas. S.A.
Text by Peter G. Wilson
Taxon concept: A.E. Orchard (1990)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
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