Foothill Flatsedge (Cyperus amabilis)
Description
Annual plants. Stems few to many, 3-15 (-20) cm tall, thin, striated, smooth. Leaves shorter than stems, 1-1.5 mm wide, broad pods at base, open and strongly veined with purple veins, scarcely scabriguous margins. Bracts 3-5, folliform, but often longer and wider, ascending. Rays absent or up to 9 cm; Rays rarely developed up to 2 cm. Numerous spikelets, 5-20 (-35) x 1.5-2.3 mm, linear, typed, forming hemispherical heads up to 30 mm wide; Raquilla almost straight, persistent, with narrow wings. Glumes 1.5-2 x c. 1 mm, not including cusp 0.3 (-0.5) mm excurved, extending green rib strongly 3-nervia, ovado-lanceolate, retusas at the base of the cusp, deciduous, The margins crisp, semi-translucent, brown-brown. Stamens 1-3. Style 0.3-0.4 mm. Achenes 0.8-0.9 x 0.4-0.5 mm, obovate to oblong, redondeadamente trigone, obtuse, apiculate, shortly estipitados, papillose, brown.
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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