PlantNET Home PlantNET Home | Search NSW Flora | Contact Us  
FloraOnline
Introduction
Plant Name Search
Index Search
Spatial Search
Identification Keys
Classification
Glossary
HerbLink (Type Images)
WeedAlert
Other PlantNET Sites
Other Data Sources
NEW SOUTH WALES FLORA ONLINE Printable Page

Vallisneria nana R.Br.
Family Hydrocharitaceae
Common name: Ribbonweed, Eelweed

Vallisneria nana R.Br. APNI*

Synonyms: Vallisneria spiralis auct. non L. p.p. APNI*
Vallisneria gigantea auct.non Graebn. p.p. APNI*

Description: Submerged tufted stoloniferous aquatic perennial; stolons white or light brown, rooting at the nodes.

Leaves all basal, strap-shaped, to 2 m long and (2.5-)-3.5–15 mm wide, with mostly acute apex, margins finely toothed at least near apex, usually 3(-5) major longitudinal nerves as well as red-brown discontinuous narrow longitudinal stripes.

Male flowers < 1 mm diam.; spathe 8–15(-20) mm long; peduncle 2–5 cm long; outer perianth segments 3, 2 larger than the other, all minute; stamens 2, with filaments free or partially divided (hence V- or Y-shaped) for up to 75% of the length; hairs present on the androecium. Female flowers 2–3 mm long on a peduncle to 2 m long, c. 5 mm in diam. when open, pink or white inside; spathe 15–20 mm long; ovary 15–25 mm long; outer perianth segments 1–2 mm long, inner minute.

Fruits marked with red-brown discontinuous narrow longitudinal stripes; seeds 1.3–1.6 mm long.


Flowering: during warmer months.

Distribution and occurrence: Widespread in NE quarter of the State; also Qld, NT, WA.

Grows in ?perennial creeks and rivers, in flowing water.
NSW subdivisions: NC, CC, NT, NWS, NWP, SWP
Other Australian states: Qld N.T. W.A.
AVH map***

Previously confused with V. gigantea and V. spiralis.

Text by S. W. L. Jacobs (1993); edited KL Wilson (March 2011) after Les, Jacobs et al. (2008) & SWL Jacobs (ms)
Taxon concept: Flora of NSW 4 (1993) p.p.; Les, Jacobs et al. (2008)


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.
  Privacy | Copyright | Disclaimer | About PlantNET | Cite PlantNET