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Cyperaceae Juss., nom. cons.
the sedge family
The name is from the Greek κυπειρος (kypeiros), a sweet-smelling marsh plant. These are grass-like herbaceous plants, commonly found in wet or saturated conditions. Although they have a superficial resemblance to grasses, they are not closely related, and differ in many characteristics, particularly in the structure of the inflorescence. Sedges also usually have stems with triangular cross-section, and leaves that are spirally arranged in 3 ranks: grasses have alternate leaves forming 2 ranks. Sedge flowers are minute, and may be bisexual or unisexual. Each floret is in the axil of a chaffy bract and these are arranged spirally or distichously in spikelets. The perianth may be represented by scales or bristles in two whorls, or may be entirely lacking. The fruit is a 3-angled or lens-shaped achene.
Abildgaardia vaginata (syn.) - Brown's Fimbristylis
Cyperus exaltatus - Tall Flatsedge
Cyperus involucratus - Umbrella Sedge
Cyperus leiocaulon - Sedge
Cyperus rotundus - Nut Grass
Eleocharis dulcis - Chinese Water Chestnut
Fimbristylis brownii (syn.) - Brown's Fimbristylis
Fimbristylis vaginata - Brown's Fimbristylis
Gahnia aspera - Saw-sedge
Scleria sphacelata - Razor Grass
Photograph © Donald Simpson 2013
Page last updated 11th April 2017