Family: Cyperaceae
Cyperus eragrostis
Citation:
Lam., Tabl. Encycl. 1:146 (1791).
Synonymy: C. vegetus Willd., Sp. Pl. 1:283 (1797), nom. illegit.
Common name: Drain flat-sedge, umbrella sedge. (Cunningham et al. (1982) Plants of western New South Wales, p. 159.)
Description:
Tufted perennial, 20-100 cm high; leaves 3-4 mm broad, flat, with recurved margins.
Spikelets very numerous in each compact subglobose cluster (100's per culm), oblong, flat, 2.5-3 mm wide, pale; rhachilla not winged; glumes falling away from the base of the spikelet, acute, keeled, green-yellow or pale-brown, nearly nerveless or with 1 prominent median nerve on each side, 2-2.5 mm long; style 3-branched.
Nut obovoid-cuneate, 0.8-0.9 x c. 0.6 mm, almost equally 3-angular, sides concave, olive-green-brown, with a transparent very faint reticulate-papillose layer, acute at the base of the style, about half of the length of the glumes.
Distribution:
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S.Aust.: GT, FR, NL, MU, YP, SL, KI, SE. All mainland States except the N.T. Native to South America.
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Conservation status:
naturalised
Flowering time: Dec. — July.
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SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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Biology:
No text
Author:
Not yet available
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