Trisetum bungei

HABIT Perennial. Rhizomes elongated. Culms erect, or geniculately ascending; 10–20 cm long. Ligule an eciliate membrane. Leaf-blades 3–6 cm long; 1–2 mm wide; flaccid. Leaf-blade surface puberulous; sparsely hairy; hairy on both sides.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 7 cm long; 0.5 cm wide. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma; shiny; gaping. Lower glume linear; 2–3 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 3.5–4.5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 3.5–4.5 mm long; membranous; shiny; keeled; 5 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; geniculate; 6 mm long overall; with twisted column. Palea gaping; hyaline.

FLOWER Anthers 3. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Aveneae. Fl Iran 1995.

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