Triglochin scilloides (Poir.) Mering & Kadereit

Diversity Phylogeny Evol. Monocotyledons 73( 2010) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Annual, emergent aquatic herb. Leaves basal, basally terete, grading to plano-convex, then flattened and linear distally, up to 30(–60) cm long, 3–8 mm wide basally; apex of basal sheath with a short ligule (to c. 2 mm long). Inflorescence made up of 2 solitary female flowers and one spike of bisexual flowers developing from the axil of each basal leaf-sheath. Female flowers with the sessile carpel terminating in a long thread-like style; style up to 38 cm long, arising laterally and at right angles to the distal surface of the ovary; stigma slightly expanded. Spike of bisexual flowers terminal, 6–20 mm long; scape usually longer than leaf-sheath but shorter than leaf. Bisexual flowers with a 2-locular, sessile anther; each anther with a translucent, white, bract-like appendage (1.2–1.5 mm long) arising from the anther connective; ovary and style short and thick; stigma papillate. Fruit dry and indehiscent; fruit of female flower 6–8 mm long, ridged, usually with horns or hooks distally; fruit of bisexual flower 4–8 mm long, ridged, with undulate wings laterally. Seed solitary. Flowers and fruits Aug.–Apr.

*CVU, *GipP, *HSF, *MuF, *OtP, *VVP, *Wim. Also naturalised NSW. Occurs in freshwater of swamps, lakes and creeks, up to a depth of about 0.3 m. Smaller plants occur on damp mud.

This species has a distinct floral morphology unlike any other species of Triglochin. The unusual floral morphology has made classification of this species challenging, with it previously being included in its own genus Lilaea Humb. & Bonpl., and even its own family, Lilaeaceae. However, recent molecular studies have shown this species to be nested in Triglochin, and hence, Triglochin is paraphyletic without its inclusion.

Source: Conn, B.J.; Aston, H.I. (1994). Juncaginaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne (as Lilaea scilloides (Poir.) Haumman).
Updated by: Val Stajsic, 2019-02-11
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Alismatales
family Juncaginaceae
genus Triglochin
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Triglochin scilloides in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Triglochin scilloides in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Wimmera present naturalised
Victorian Volcanic Plain present naturalised
Murray Fans present introduced
Gippsland Plain present naturalised
Otway Plain present naturalised
Central Victorian Uplands present naturalised
Highlands-Southern Fall present naturalised

State distribution

Distribution map
New South Wales