Flora of the Hawaiian Islands
Monocotyledon Literature for Trisetum glomeratum
Wagner et al., 1990, 1999.
   Poaceae -- The Grass Family Bibliography
      Trisetum glomeratum

Common name(s): he`upueo (Hawai`i), mountain pili, pili uka
General Information
DistributionIn the Hawaiian Islands, endemic to Maui, Hawai`i.

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Perennials; culms densely tufted, 4-9 dm tall, erect, robust, glabrous or pubescent.
Sheaths 4-12 cm long, usually loosely clasping the culm, especially the lower ones, glabrous to soft pubescent; ligule 3-5 mm long, membranous, usually lacerate; blades coriaceous, flat, or usually involute toward the stiff, subulate apex, 10-25 cm long, 2-4(-6) mm wide, glabrous or pubescent.
Panicles erect, spike-like, sometimes interrupted or rather loose, 12-20 cm long, ca. 1 cm in diameter; spikelets 2-3-flowered, 4-6 mm long, compressed, scabrous to villous; glumes ca. 5 mm long, apex acuminate, first glume narrow, 0.7-1 mm wide from keel to margin, second glume twice as wide as first glume; lemmas 4-5 mm long, indistinctly 5-nerved, rather firm, somewhat keeled, usually dorsally awned from below the entire or slightly bifid apex, the awn usually bent, 2-5 mm long; palea 4-5 mm long, membranous, apex acuminate.
Caryopsis reddish brown, cylindrical, 2.5-3 mm long, apex attenuate.