Cyperus lanceolatus |
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epiphytic flatsedge |
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Habit | Herbs, perennial, cespitose, rhizomatous. |
Culms | trigonous, compressed, 15–75 cm × 0.5–3 mm, glabrous. |
Leaves | 1–3, 5–30 cm × 1–2 mm. |
Inflorescences | spikes 1(–2), ovoid, 5–23 × 9–21 mm; rays 2–3(–4), 0–15 mm; if rays absent, head single, compact, sessile, (12–)15–20 mm diam.; bracts 2–3, horizontal to vertical, 2–14 cm × 0.5–3.5 mm. |
Spikelets | 1–6, oblong-lanceoloid, 5–26 × 2–3 mm; floral scales 12–54, closely imbricate, laterally yellowish brown, medially pale brown, occasionally greenish, laterally 1-ribbed, medially 3-ribbed, distinctly 2-keeled basally, ovate, 1.8–2.6 × 1.4–1.7 mm, apex obtuse. |
Flowers | stamens 2; anthers 0.4–0.5 mm, connectives not prolonged; styles 0.3–1 mm; stigmas 0.6–0.8(–1) mm. |
Achenes | brown, network of ridges forming isodiametric or square cells, stipitate, obovoid to ellipsoid, 1.1–1.3 × (0.5–)0.6 mm, apex acute to broadly rounded, surfaces minutely punctate or finely papillose. |
Cyperus lanceolatus |
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Phenology | Fruiting summer. |
Habitat | Marshes |
Elevation | 0–100 m (0–300 ft) |
Distribution |
AL; FL; GA; LA; TX; Mexico; Central America; South America; Africa
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Source | FNA vol. 23, p. 162. |
Parent taxa | Cyperaceae > Cyperus > subg. Pycreus |
Sibling taxa | |
Synonyms | C. densus, C. humboldtianus, C. lanceolatus var. compositus, Pycreus densus |
Name authority | Poiret: in J. Lamarck et al., Encycl. 7: 245. (1806) |
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