GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Bromus pseudobrachystachys

HABIT Annual. Culms erect; slender; 20–25 cm long. Leaf-sheaths pilose. Ligule an eciliate membrane. Leaf-blades 5–10 cm long; 2–4 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic; effuse; 10 cm long; 5 cm wide. Primary panicle branches spreading, or drooping.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 5–10 mm long; 2–3 mm wide; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2–2.5 mm long; 0.66–0.75 length of upper glume; membranous; without keels; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 2.5–3.5 mm long; 0.66 length of adjacent fertile lemma; membranous; without keels; 5–7 -veined. Upper glume apex acute.

FLORETS Fertile lemma trullate; widest at 0.6 of its length from base; 4–5 mm long; chartaceous; without keel; 7–9 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn subapical; subterete below; 3–5 mm long overall. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3. Ovary with a fleshy appendage above style insertion; pubescent on apex.

FRUIT Caryopsis with adherent pericarp; hairy at apex; apex fleshy. Hilum linear.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Bromeae. Fl Turk 1993.

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