Australian Tropical Rainforest Plants - Online edition

Cyperus brevifolius (Rottb.) Endl. ex Hassk.


Grass
Click/tap on images to enlarge
Inflorescence. © R.L. Barrett
Inflorescence. © R.L. Barrett
Herbarium specimen. © DERM
Family

Hasskarl, J.C. (1844) Catalogus Plantarum in Horto Botanico Bogoriensi Cultarum Alter 1844: 24.

Common name

Kyllinga; Mullimbimby Couch

Stem

Perennial with creeping rhizome which are slender and covered in reddish brown sheaths. Stems triquetrous, up to 40 cm tall, compressed and smooth.

Leaves

Leaves shorter to as long as the culms, V-shaped (canaliculate) in cross-section, 1-3 mm wide.

Flowers

Inflorescences capitate; the 3 inflorescence bracts (2 long + 1 short) are leaf-like and spreading upwards. Spikes ovoid, 6-7 x 6-8 mm; spikelets compressed about 3 x 1 mm, 1-flowered. Glumes with green denticulate keel.

Fruit

Nut yellowish brown, obovoid, biconvex, apiculate; half the length of the glume; testa very smooth.

Seedlings

Features not available.

Distribution and Ecology

A naturalised species that occurs in WA, NT, CYP, NEQ, CEQ and wideaspread througth south eastern and southern Australia. Altitudinal range from near sea level to 810 m. Grows in rainforest, Eucalypt forest and on grassy slopes. Also occurs throughout the tropical and warm temperate regions of the world.

Natural History & Notes

Can become a pioneer plant in disturbed areas especially along roads (Clarkson 5090).

A weed of cultivation and agriculture (Wilson 1993).

Synonyms
Kyllinga brevifolia Rottb., Descriptiones et Iconem Rariores : (1773), Type: "Hanc cum priori a Domino Königio habeo.".
RFK Code
4196
Copyright © CSIRO 2020, all rights reserved.