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Herbarium specimen. Copyright CSIRO

Cyperus dietrichiae

Family

Cyperaceae

Botanical Name

Cyperus dietrichiae Boeck.

Boeckeler, J.O. (1875) Flora oder Allgemeine Botanischer Zeitung 58: 122. Type: Queensl. Port Mackay (Am. Dietrich).

Stem

Tufted perennial. Rhizome short, lacking stolons. Stems rigid, triquetrous and smooth, 30-80 cm tall.

Leaves

Leaves flat, 2-4 mm wide; lower sheaths pale and membranous.

Flowers

Inflorescence simple or compound, loose with 3-7 involucral bracts, lower as long as or overtopping the inflorescence. Primary rays 5-10, very slender, longer ones up to 20 cm. Spikes broadly ovoid with 10-25 spikelets. Spikelets filiform with 5-8 flowers, lower ones at right angles to the rachis. Rachilla broadly winged. Glumes not touching, with a green keel, 4-5 veins on either side of the keel.

Fruit

Nut trigonous, greenish yellow, oblong linear, acuminate, about 2 x 0.3 mm, with a smooth testa, the length of the glume.

Seedlings

Features not available.

Distribution and Ecology

Occurs in NEQ, CQ and NSW. Altitudinal range from near sea level to 850 m. Grows in rainforest, microphyll vine forest, Eucalypt forest, various types of woodland, swampy areas and in dune scrub. Also occurs in Malesia.

NEQ

X

Grass

X

RFK Code

4198