Common name: Pondweed
Potamogeton octandrus Poir. APNI* Synonyms: Potamogeton javanicus Hassk. APNI*
Potamogeton ligulatus Hagstr. APNI*
Potamogeton quinquenervius Hagstr. APNI*
Description: Rhizomatous, almost turf-forming aquatic perennial, with numerous submerged and a few floating leaves; turions not recorded.
Floating leaves narrow-elliptic 2–4 cm long, < 10 mm wide, 5–7-veined, apex acute; submerged leaves translucent, linear, tapered at apex and base, 5–10 cm long, 2–3 mm wide.
Inflorescence a spike, emergent, dense, to 2 cm long.
Nutlets 2–2.5 mm long, with a prominent beak, ± keeled.
Flowering: during warmer months.
Distribution and occurrence: North from Sydney district along east coast of Australia; also in tropical NT and WA. Grows in shallow water of lakes and creeks, often in sand
NSW subdivisions: NC, CC
Other Australian states: Qld W.A. N.T.
Text by S. W. L. Jacobs & S. Papassotiriou (1993); edited KL Wilson and SWL Jacobs (April 2009); edited KL Wilson (Sept 2011)
Taxon concept: Flora of NSW 4 (1993) (as P. javanicus); SE Papassotiriou, SWL Jacobs & CB Hellquist, Fl. Australia vol 39 (2011)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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