Difference between revisions of "Cyperus spectabilis"
Novi Provent., 15. 1818.
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|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Cyperus | |subgenus=Cyperus subg. Cyperus | ||
Latest revision as of 20:39, 5 November 2020
Herbs, perennial, rhizomatous. Culms trigonous, (12–)30–80(–90) cm × 0.7–1.7 mm, glabrous or nearly so. Leaves flat to V-shaped, 20–45 cm × 2–4 mm, margins and keel minutely scabridulous. Inflorescences: spike 1, loosely ovoid to ovoid-ellipsoid, (1.5–)2.5–7 × (1–)1.5–3.5 cm; rays 1–4, 1–15 cm; rachis 1–2 cm; bracts 2–4, oblique or ascending, 1–15(–24) cm × 0.4–3.5 mm, keel, margins scabrid; rachilla ± deciduous, wingless. Spikelets (3–)8–40, linear, compressed-quadrangular, 8–18 × (2.4–)2.8–4 mm; floral scales deciduous, (2–)4–12, laterally light brown to reddish brown, medially green or light brown, laterally 2–3-ribbed, oblong-ovate, 1.6–2.6 × (1.5–)1.6–2.2(–2.4) mm, apex obtuse, sometimes mucronulate, medially glabrous. Flowers: anthers 0.4–0.6 mm; styles 0.3–0.6 mm; stigmas 0.6–1 mm. Achenes brownish, stipitate, ellipsoid, 1.6–2 × (0.7–)0.9–1 mm, stipe whitish, 0.1–0.2 mm, apex obtuse, slightly apiculate, surfaces papillose.
Phenology: Fruiting summer.
Habitat: Arroyos, riverbanks, clearings in montane forests
Elevation: 100–1300 m
Distribution
Ariz., Tex., Mexico.
Discussion
Selected References
None.