Sedges

Sedges – Bunchy sedge (Cyperus polystachyos) is similar to rice flat-sedge (Cyperus iria), drain flat-sedge (Cyperus eragrostis) and dirty Dora (Cyperus difformis). These species can be distinguished by the following differences: bunchy sedge (Cyperus polystachyos) has unbranched or shortly branched seed-heads that turn brownish or yellowish-brown as they mature. The pointed flower spikelets are densely packed in a single stalkless cluster or in irregularly shaped clusters at the tips of the short branches rice flat-sedge (Cyperus iria) has branched seed-heads that turn golden-yellow in colour as they mature. The flower spikelets are loosely arranged in elongated clusters at the tips of the branches drain flat-sedge (Cyperus eragrostis) has branched seed-heads that turn golden-yellow or yellowish-brown as they mature. The flower spikelets are densely packed in rounded clusters at the tips of the branches dirty Dora (Cyperus difformis) has branched seed-heads that turn reddish brown or dark brown as they mature. The flower spikelets are densely packed in rounded clusters at the tips of the branches.