Bolboschoenus glaucus (Lam.) S.G.Sm., it is a perennial herb, 0,3-0,8-1,5 m tall; rhizome creeping, fleshy, with a tough persistent central core, with underground spherical-elliptical tubers 1,5-2×1,2-1,5 cm. the stems single, sharply trigonous, lower leaf sheaths with an elongate V-shaped mouth without a projecting tongue. Leaves shorter to longer than stem, blade 3-7 per stem, to 60 cm long, 0,4-1 cm wide. Inflorescence simple or compound consisting of a central group of clustered ± sessile red to purple spikelets, accompanied by 2-6(-14) rays each to 3,5-5 cm long and wide, the whole inflorescence pseudo-lateral but later expanding to appear terminal, involucral bracts 1-2(-3), leaf-like. Fruit, anthers yellow; stigmas (2)3, long 2.5-3.3 mm, 1.3-2.3 mm wide, 3-sided.
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