Cyperus dietrichiae var. brevibracteatus (Domin) Kuek. APNI*
Description: Tufted perennial with very short rhizome.
Culms trigonous, smooth, 20–45 cm high, 1.5–2 mm diam.
Leaves not septate-nodulose, shorter than culms, to 2.5 mm wide. Inflorescence simple or subcompound, with 4–10 branches to 10 cm long, sometimes reduced to a dense sessile spike; spikes broad-cylindrical, to c. 1 cm long, c. 3 cm diam.; involucral bracts leaf-like, 1–3 longer than inflorescence. Spikelets terete, numerous per spike, flexuous, 10–20 mm long, c. 0.5 mm diam., almost subulate, 3–6-flowered; rachilla broadly winged; spikelet falling as unit. Glumes remote, closely appressed to rachilla, with sides several-nerved, 2.3–2.7 mm long, pale to red-brown. Stamens 3. Style 3-fid.
Nut trigonous, narrow-ellipsoid, more than half as long as glume, c. 1.7 mm long, c. 0.4 mm diam., dark grey.
Distribution and occurrence: Grows in woodland on sandy soil; north from Brunswick Heads.
NSW subdivisions: NC
Other Australian states: Qld
This differs from typical C. dietrichiae (in Qld and N.G.) in its shorter glumes and spikelets, fewer bracts, and generally more slender plants. It may be better treated as a species.
Text by KL Wilson (1993)
Taxon concept: Flora of NSW vol 4 (1993)
|The single variety in NSW. Characters and distribution as for the species in NSW.|
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