Common name: Coolibah Grass
Thellungia advena Stapf APNI* 
Description: Robust, tufted perennial to 1.3 m high.
Leaves with sheath tightly enclosing culm, smooth, glabrous; ligule a ciliate rim, with hairs c. 0.25 mm long; blade flat, folded when dry, to 0.4 cm wide, smooth or lightly scabrous, glabrous.
Inflorescence contracted, cylindrical, sometimes interrupted, 7–55 cm long, to 1 cm wide; sometimes partly enclosed in uppermost sheath; rachis smooth, glabrous. Spikelets c. 4 mm long, to 1.5 mm wide, subsessile; florets 3 or occasionally 4; pedicel to 1 mm long, smooth, glabrous. Glumes unequal, acute, membranous, keel often lightly scabrous, smooth, glabrous; lower c. 2 mm long, upper c. 3 mm long. Lemma 2–3.5 mm long, acute, keel often lightly scabrous, smooth, glabrous. Palea c. 1.5 mm long, acute, 2-keeled, smooth, glabrous.
Flowering: Flowers in response to rain.
Distribution and occurrence: Grows on black soil in semi-arid areas.
NSW subdivisions: NWS, NWP, NFWP
Other Australian states: Qld N.T.
Text by S. W. L. Jacobs & K. L. McClay
Taxon concept: Flora of NSW 4 (1993) and Grasses of New South Wales, Fourth Edition (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.
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