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Herbarium specimen. Copyright CSIRO

Cyperus enervis

Family

Cyperaceae

Botanical Name

Cyperus enervis R.Br.

Brown, R. (1810) Prodromus Florae Novae Hollandiae: 213. Type: ?.

Synonyms

Cyperus gracilis var. enervis (R.Br.) Kuk., Das Pflanzenreich 101: 297(1936), Type: ?.

Stem

Densely tufted perennial with short rhizome and 4-angled stems 10-50 cm tall.

Leaves

Leaves filiform, 0.4-1.0 mm wide, shorter than the inflorescence.

Flowers

Inflorescence simple terminal spikes. Involucral bracts 3-4 with the lower one very long and erect, 0.3 mm wide. Spikes ovoid up to 2.5 cm long and wide. Spikelets 2-14, flattened, oblong-linear in outline, acute, 0.5-1.5 x ca. 0.2 cm; up to 32-flowered, rachilla wingless; glumes 1.8-2 mm long, 2-3 nerved with whitish sides, acute.

Fruit

Nut pale brown to reddish brown, trigonous, ellipsoid to slightly obovoid, testa minutely papillate to smooth, style base thickened, ? length of the glume.

Seedlings

Features not available.

Distribution and Ecology

Occurs in CYP, NEQ, CQ and NSW. Altitudinal range from near sea level to 980 m. Grows in rainforest, notophyll vine forest, various types of woodland and occasionally in grassland.

CYP

X

NEQ

X

Grass

X

RFK Code

4199