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

Common name(s): velvet grass, common velevet grass, Yorkshire fog
General Information
DistributionNative to Europe, now widely naturalized.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Maui, Hawai`i.

Perennials; culms 30-60 cm tall, velvety canescent.
Sheaths 6-12 cm long, striate, velvety canescent; ligule membranous, 1-2 mm long, narrowly lacerate, with short hairs at apex; blades 10-20 cm long, 4-8 mm wide, velvety canescent, the midrib prominent.
Inflorescences silvery to purplish, paniculate, contracted, sometimes almost spike-like, 8-15 cm long, occasionally enclosed within the uppermost sheath; spikelets 4-4.5 mm long, short-pedicellate; glumes 4-4.5 mm long, keeled, the keels hirsute, otherwise scabrous, first glume 1-nerved, 0.5-0.7 mm wide from keel to margin, second glume 3-nerved, 1-1.2 mm wide from keel to margin; lemma of perfect floret ca. 2 mm long, rather broad, slightly keeled, the keel hirtellous, lemma of staminate floret 2-2.5 mm long, narrow, acute, indistinctly keeled, the keel minutely hirtellous, apex with a hooked awn ca. 1.5 mm long; palea 1.7-2 mm long, minutely hirtellous at apex.
Caryopsis pale brown, fusiform, ca. 1.6 mm long, laterally compressed, trigonous, with an adaxial groove.
2n = 14