Harper'S Fimbry (Fimbristylis perpusilla)
Description
Plants annual, delicate, cespitose, slender, 2-15 cm; rhizomes absent. Leaves polystichous, spreading to ascending, mostly excurved, exceeding or exceeded by culms; sheaths entire, backs glabrous; ligule absent; blades setaceous-filiform, to 0.5 mm wide, flat to involute, sparsely scabrid-ciliate. Inflorescences: anthelae mostly simple, open, nearly as broad as long, ascending-branching, umbelliform, of 3-10 cormose spikelets; scapes filiform, 0.5-0.6 mm thick; proximalmost involucral bracts setaceous-bladed, exceeding anthela. Spikelets pale green to light brown, ovoid to globose or short-cylindric, 2-5 mm; fertile scales lance-linear to oblong-linear, 1.5 mm, glabrous, midrib strongly excurrent, erect to excurved cusp. Flowers: stamens 1; styles 2-fid, slender, glabrous. Achenes pale brown with iridescent tints, curved-cylindric, 0.4-0.6 mm, finely reticulate, in 12 vertical rows of narrowly rectangular, horizontal cells. 2n = 10.
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: Fimbristylis
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