All Floras      Advanced Search
FOC Vol. 22 Page 500, 501 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 22 | Poaceae

154. Oplismenus P. Beauvois, Fl. Oware. 2: 14. 1810 [“1807”].

求米草属 qiu mi cao shu

Authors: Shou-liang Chen & Sylvia M. Phillips

Orthopogon R. Brown, nom. rej.

Perennials or annuals. Culms trailing, ascending from a decumbent base, the internodes mostly with a villous line adaxial to the subtending leaf. Leaf blades ovate, lanceolate or linear-lanceolate, often with cross veins; ligule a ciliate membrane. Inflorescence composed of several unilateral racemes spaced along a central axis; racemes elongate or reduced to fascicles of a few spikelets, spikelets usually paired on short pedicels, the lowermost often reduced. Spikelets lanceolate to oblong, weakly dorsally or laterally compressed, florets 2; glumes subequal, 1/2–3/4 spikelet length, often pilose, the lower or both tipped by a viscid awn; lower lemma equaling the spikelet, acute to shortly awned, its palea absent or much reduced; upper lemma papery or subcoriaceous, smooth and shiny, acute, indistinctly crested. x = 9.

Five to nine species:throughout the tropics and subtropics; four species (one endemic) in China.

This is a genus of closely related, intergrading species where the number of taxa meriting recognition is still open to doubt.

1 Racemes reduced to dense cuneate fascicles less than 2 cm long.   1 O. undulatifolius
+ Racemes elongate, 2–10 cm long   (2)
2 (1) Spikelets single; fertile lemma mucronate at apex.   4 O. patens
+ Spikelets paired or 3 at the base; fertile lemma acute at apex   (3)
3 (2) Awn of lower glume 2–3 times longer than glume body.   2 O. compositus
+ Awn of lower glume equaling or slightly longer than glume body.   3 O. fujianensis

  • List of lower taxa


    Related Objects  
  • Oplismenus.pdf
  • PDF

  • Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |