Flora of the Hawaiian Islands
Monocotyledon Literature for Eleocharis geniculata
Wagner et al., 1990, 1999.
   Cyperaceae -- The Sedge Family Bibliography
      Eleocharis geniculata
General Information
DistributionPantropical.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.

Annuals; culms densely tufted, pale or green and slightly glaucous, filiform, 7-30 cm tall, 0.2-0.5 mm in diameter.
Sheaths pale green, often tinged reddish brown in lower part, 0.5-3 cm long, orifice truncate.
Spikelets many-flowered, rusty or pale brown, broadly ovoid to ovoid-ellipsoid, 3-7 mm long, 3-4 mm wide, obtuse; glumes pale brown, membranous, broadly elliptic to ovate, ca. 2 mm long, obtuse, the midnerve green, ending below the glume apex; bristles 6-7, rusty brown, retrorsely spinulose, slightly longer than the achene; style base depressed-conical, nearly 1/3 as wide as achene; stigmas 2.
Achenes black, glossy, smooth, broadly obovoid, thickly biconvex, ca. 1 mm long.
2n = 10, 20, 30, 38
David Lorence