Plukenet'S Flatsedge (Cyperus plukenetii)
Description
Leaves - Blades to 60cm long, 3-7mm broad, all basal, present at anthesis, pubescent. Inflorescence - Terminal umbel with 4-12 rays. Each ray to 15cm long, uniformly roughened and short pubescent over the entire length, 1-2mm broad. Bracts of the inflorescence +/-6, shorter than the rays, pubescent at least on the margins, spreading. Spikes 10-18mm long, with 20-100 spikelets. Spikelets dense, sessile, mostly reflexed, the bases of the spikelets not visible. Flowers - Spikelets 6-8mm long, narrowly linear, acute to acuminate at the apex, terete to somewhat 4-angled, typically with 3 scales, glabrous, typically shed as an intact unit. Scales 4-4.5mm long, strongly overlapping, lanceolate, acute to acuminate, straw-colored to brown. Fertile florets 1-2 per spikelet. Stamens 3. Anthers .5-1mm long. Stigmas 3. Fruits 2.5-3mm long, narrowly oblong in outline, 3-angled in cross-section, with flat sides, brown, shiny, finely pebbled.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Liliopsida
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Order: Poales
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Family: Cyperaceae
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Genus: Cyperus
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