Flora of the Hawaiian Islands
Monocotyledon Literature for Schoenoplectus tabernaemontani
Wagner et al., 1990, 1999.
   Cyperaceae -- The Sedge Family Bibliography
      Schoenoplectus tabernaemontani
General Information
DistributionWidely distributed in north temperate regions and on tropical high mountains of North and South America, Pacific islands, Australia, Malesia, and southern AsiaIn the Hawaiian Islands, indigenous to Ni`ihau, Kaua`i, O`ahu, Moloka`i, Maui, Hawai`i.

Cyperaceae - Schoenoplectus tabernaemontani Cyperaceae - Schoenoplectus tabernaemontani

Click here for detailed USGS map by Jonathan Price
HabitatFreshwater rivers or lakes
Elevation600-1070 m
Perennial with coarse, horizontally creeping rhizomes 0.8-1.5 cm in diameter; culms solitary or few together, arising in a row along the rhizome, dull green, terete, not nodose, 70-300 cm tall, 5-10 mm in diameter below.
Leaves reduced to 3-5 bladeless sheaths, or with blades up to 10 cm long; sheaths 10-40 cm long, the lower ones dusky brown, soon disintegrating into reticulate fibers, the upper ones pale green, the orifice oblique.
Inflorescences anthelate, compound to partially decompound, recurved to nodding, with numerous spikelets, the primary rays 3-8, 1-6 cm long, secondary rays up to 2 cm long; involucral bracts 2-3, the lowest one subulate, erect, 1-3 cm long, the other bract(s) membranous, scale like; spikelets solitary and/or in clusters of 2-3, rusty brown, ovoid to ovoid ellipsoid, 6-15 mm long, 3-4 mm wide, acute; glumes ovate to elliptic, 2.5-3.2 mm long, membranous, ± with reddish brown resinous spots on upper median portion, margins broadly white hyaline, ciliate toward apex, the green midnerve prolonged as a mucro at the obtuse to shallowly emarginate apex; bristles 2-5, shorter than to as long as the achene, retrorsely spinulose scabrous; stigmas 2.
Achenes grayish brown, broadly ovoid, 1.8-2.5 mm long, plano convex.
2n = 38, 40, 42
Nancy Khan