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

Common name(s): bentgrass, he`upueo
General Information
DistributionIndigenous to Australia and the Pacific Basin.In the Hawaiian Islands, indigenous to Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i.

Click here for detailed USGS map by Jonathan Price
HabitatDry ridges to margins of bogs
Elevation260-2520 m
Clump forming perennial; culms erect or decumbent at base, 20-60 cm tall, thin, 1-2 mm in diameter, glabrous.
Sheaths loosely clasping the stem, margins overlapping, glabrous or scabrous; ligule conspicuous, membranous, linear-triangular, 6-8 mm long, glabrous, margins entire, apex acuminate but often frayed; blades flat, 10-20 cm long, 0.5-3 mm wide, upper surface scabrous, lower surface glabrous, apex acuminate.
Inflorescences paniculate, terminal, branches numerous, flexuous, scabrous, ascending to spreading, diffuse in appearance, 10-30 cm long; spikelets numerous, present only on distal 1/3-1/2 of primary inflorescence branches, pale, rachilla partly obscured by a cluster of silky hairs extending 1/2-3/4 the length of the palea; glumes 2-3 mm long, completely enclosing the floret, acuminate, keel prominent, scabrous to ciliate, margins membranous to chartaceous, glabrous; lemma obtuse, 1.5-2 mm long, evenly silky pubescent, upper 1/4 bifid, awn attached near middle of lemma, 3-4 mm long, geniculate, lower portion glabrous, distinctly thickened, upper portion scabrous; palea ca. 1.3 mm long, narrow, glabrous, apex acute.
Caryopsis brown, ellipsoid, ca. 1.5 mm long, ca. 0.5 mm wide, glabrous.
2n = 56
Nancy Khan