Australian Tropical Rainforest Plants - Online edition

Sisyrinchium micranthum Cav.

Herb (herbaceous or woody, under 1 m tall)
Click/tap on images to enlarge
Herbarium specimen. © DERM

Cavanilles, A.J. (1788) Monadelphiae Classis Dissertationes Decem. 6: 345, t. 191, fig. 2.

Common name

Annual blue-eyed grass


Annual tufted herb, 10-20 cm tall. Stems flattened and 2-angled.


Leaves distichous, equitant; lamina flat and shorter than the stems, less than 1.5 cm broad, narrowly acute.


Scape winged, flattened. Spathaceous bracts 12-30 mm long, acute; pedicels filiform, 5-15 mm long, exserted beyond bracts. Pedicels slender; Perianth yellow with reddish-brown markings, 7 mm long; lobes acute, ca. apiculate.


Capsule nodding, depressed-globose, reddish, 2-3 mm long. Seed pyriform, ca. 0.5 mm diam., pitted and black.


Features not available.

Distribution and Ecology

Occurs in NEQ and from south-eastern Queensland southwards to Victoria and Tasmania. Altitudinal range from near sea level to 500 m. Grows in disturbed sites in forest. Also occurs in most temperate to subtropical countries around the world.

Natural History & Notes

A weed of disturbed places in high rainfall areas (Bentham 1873, Green 1994).

Poisonous to stock, causing violent scouring (Webb 1948).

RFK Code
Copyright © CSIRO 2020, all rights reserved.