Latin American Flatsedge

Cyperus lentiginosus has been treated as a variety of C. tenuis (G. Kükenthal 1935–1936). The two taxa differ in the longer scales with cuspidate apices of C. lentiginosus, the inversely W-shaped leaves and bracts (those of C. tenuis are V-shaped), and the open spikes (those of C. tenuis are dense).

Herbs, perennial, cespitose, rhizomatous. Culms trigonous, (1–) 20–40(–75) cm × 1–1.5(–2.5) mm, glabrous. Leaves inversely W-shaped, 10–40(–70) cm × (1–)3–6(–10) mm. Inflorescences: spikes 1(–3), broadly and loosely ovoid to oblong-ellipsoid, (15–)20–30(–50) × 20–30(–45) mm; bracts (3–)5–7(–10), ascending at 30(–45)°, inversely W-shaped, 10–30(–50) cm × (1–)3–5(–11) mm; rays (2–)3–6(–12), (1–)3–10(–17) cm; rachilla deciduous, wings ca. 0.3 mm wide. Spikelets (10–)25–50(–100), ± terete, (appearing compressed due to excurved apices of floral scales), (8–)12–15(–24) × (0.8–)1.1–1.4(–1.8) mm; floral scales persistent, (4–)6–8(–14), golden brown, off-white to stramineous, densely red-glandular punctate, green medially, 3–4-ribbed laterally, 3–5-ribbed medially, oblong-lanceolate, (3.2–)4–4.5 × 1.2–1.6 mm, apex blunt, mucronulate to mucronate, mucro 0.2–0.5 mm; proximal scales mucronulate, distal scales mucronate; terminal scale conduplicate. Flowers: anthers 0.5–0.8(–1.4) mm; styles 0.8–1 mm; stigmas 1–2 mm. Achenes brown, ± sessile to stipitate, oblong-ellipsoid, 1.7–2 × 0.6–0.7 mm, 0.1(–0.2) × 0.2 mm, apex rounded, apiculate from dark purple style base, surfaces papillose.

Fla., Tex.; Mexico; West Indies.

Fruiting spring–summer.

Thickets, open woods; 0–50m.

Cyperus strigosus Linnaeus var. gracilis Britton; C. tenuis Swartz var. lentiginosus (Millspaugh & Chase) Kükenthal

Cyperus lentiginosus is a species of sedge that is native to southern parts of North America, Central America and northern parts of South America.

Cyperus lentiginosus adalah spesies tumbuhan yang tergolong ke dalam famili Cyperaceae. Spesies ini juga merupakan bagian dari ordo Poales. Spesies Cyperus lentiginosus sendiri merupakan bagian dari genus Cyperus. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Millsp. & Chase.

Cyperus lentiginosus là loài thực vật có hoa trong họ Cói. Loài này được Millsp. & Chase mô tả khoa học đầu tiên năm 1903.