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Herbarium specimen. Copyright DERM
Cyperus bulbosus Vahl
Vahl, M.H. (1805) Enumeratio Plantarum 2: 342. Type: Habitat ad Senegal, in Guinea ac in India Orientali. Jussieu, Thonning, Konig.
Australian Bush Onion
Slender perennial sedge with short rhizomes covered in reddish brown leaf remains. Stems strongly triquetrous, smooth and bulbous at base, dark brown to blackish, 20-40 cm tall.
Leaves as long as the culms, 1-2 mm wide; midvein prominent on lower surface of leaf.
Inflorescence much longer than the leaves; inflorescence branches with tubular sheaths; spikes to 5 cm long; involucre bracts distant from one another, leaf-like with at least 1 greatly exceeding the inflorescence. Spikelets flattened, 10-30 per spike, 10-25 mm long, 5-20 -flowered. Glumes subacute, with 3-5 nerves on either side of green keel, 3-5 mm long, ornge to red-brown.
Features not available.
Distribution and Ecology
Commonly as a weed of cultivation.