Common name: Winged Water-starwort, Western Water-starwort
Callitriche umbonata Hegelm. APNI*
Synonyms: Callitriche cyclocarpa Hegelm. APNI*
Description: Spreading, submerged or semi-aquatic glabrous herb.
Leaves, at least in aquatic forms, dimorphic; lower leaves linear, to c. 10 mm long and 0.5–1 mm wide, 1-veined, apex notched; upper leaves spathulate, c. 10 mm long and 4 mm wide, 3–5-veined, gradually tapering into petiole.
Flowers solitary, the females often in opposite axils; bracts present. Stamen with the filament elongating to c. 3.5 mm.
Fruit almost circular, c. 1 mm diam., with a prominent wing.
Distribution and occurrence: in damp often swampy places; south from Tumbarumba.
NSW subdivisions: ST, SWS, SWP
Other Australian states: Vic. S.A. Tas.
This species is considered data-deficient by Saving our Species (SoS, DPIE) which means a conservation project cannot be developed for it. Visit their website and contact SoS if you have additional information.
Text by S. W. L. Jacobs
Taxon concept: Flora of NSW 3 (1992)
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.