Coleanthus subtilis

HABIT Annual. Culms decumbent; 2–5 cm long. Leaf-sheaths inflated. Ligule an eciliate membrane; 1–1.5 mm long. Leaf-blades 1–2 cm long; 0.5–1.5 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle glomerate (umbel-like). Primary panicle branches whorled at most nodes.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; pubescent.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 0.5 mm long; falling entire.

GLUMES Glumes both absent or obscure.

FLORETS Fertile lemma ovate; 0.5 mm long; hyaline; keeled; 1 -veined. Lemma midvein scabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn 0.5 mm long overall. Palea 1 length of lemma; hyaline; 2 -veined. Palea keels scabrous. Palea apex with excurrent keel veins.

FLOWER Lodicules absent. Anthers 2; 0.3 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; laterally compressed; exposed between gaping lemma and palea at maturity; 1 mm long. Embryo 0.25 length of caryopsis. Hilum elliptic.

DISTRIBUTION Europe: central, southwestern, and eastern. Asia-temperate: Siberia, Soviet far east, and China. North America: northwest USA.

NOTES Poeae. WDC.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.