Flora of the Hawaiian Islands
Monocotyledon Literature for Cyperus mindorensis
Larridon et al., 2014; Kern, 1974; Wagner et al., 1990, 1999; Lorence & Wagner, 2019.
   Cyperaceae -- The Sedge Family Bibliography
      Cyperus mindorensis
General Information
DistributionPantropical, but uncommon in the Neotropics.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i. First collected 1929, Caum s.n. (BISH).

HabitatGardens and lawns
Elevation0-200 m
Perennial herb with long creeping rhizomes; culms tufted or closely to widely spaced along the rhizome, erect, trigonous, 10‒45 cm tall.
Leaves numerous, usually shorter than the culm; blade herbaceous, flat, linear, 2‒5 mm wide; sheath brown to purplish brown.
Inflorescences a single spike or often with 2‒3 additional small lateral spikes, each one white, turning brownish white after anthesis, globose, 5‒10 mm long, 5‒7 mm in diameter, densely bearing numerous spikelets; involucral bracts 3‒4, spreading to reflexed, the lowest one to 30 cm long. Spikelets ovate-elliptic to lanceolate-ovate, 2.7‒3.5 mm long, ca. 1.5 mm wide; glumes 4‒5, white and eventually becoming variegated brownish white with rusty brown, thin, membranous, lowest 2 glumes small and narrow, 1‒1.5 mm long, next 2 glumes boat-shaped, 2.5‒3.5 mm long, both sides 3‒4-veined, broadly winged on the acute green keel, wing serrulate, keel prolonged as a short, usually recurved mucro, fifth glume, when present, small; stamens 3, anthers 0.6‒0.7 mm; style long, stigmas 2.
Achenes brown at maturity, oblong-obovoid or suborbicular, biconvex, 1.2‒1.5 mm long, densely puncticulate.
2n = 18, 86, 124.
Warren Wagner