Potamogeton tricarinatus auct. non F.Muell. & A.Benn. ex A.Benn. APNI* 
Description: Rhizomatous aquatic perennial with both submerged and floating leaves and emergent inflorescences on stems to 4 m long; turions produced in some forms.
Submerged leaves translucent, narrow-elliptic or linear-lanceolate to elliptic or broad-ovate, to 20 cm long and c. 10 mm wide, sessile or very shortly petiolate, often ± undulate and with a stipular sheath to c. 5 cm long embracing the stem above the axil; stipular sheath becoming laciniate with age; floating leaves relatively thick, to c. 10 cm long and 7 cm wide, petiolate, with usually 13–17 parallel veins.
Inflorescence a dense spike, emergent, to 5 cm long.
Nutlets 2–4 mm long, laterally compressed, smooth or tuberculate, with a short beak.
Flowering: spring–autumn.
Distribution and occurrence: Grows in slowly flowing water of rivers and creeks to c. 3 m deep, widespread.
NSW subdivisions: NC, CC, ST, NWS, SWS, NWP, SWP
This description and the map apply to at least two species (P. cheesemanii and P. sulcatus); P. tricarinatus is now considered to be restricted to central Qld. The full scientific research has not yet been published, so details will be supplied here later.
Text by S. W. L. Jacobs & S. Papassotiriou (1993); edited KL Wilson and SWL Jacobs (April 2009)
Taxon concept: Flora of NSW 4 (1993) (as P. tricarinatus)
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.
|
