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.

Elymus bungeanus

HABIT Perennial; caespitose; clumped densely. Rhizomes short. Culms 30–70 cm long. Leaf-sheaths outer margin hairy. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades flat, or convolute; 2–4 mm wide; glaucous. Leaf-blade surface pubescent; hairy adaxially.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 6.5–15 cm long. Rhachis flattened; smooth on margins, or scaberulous on margins. Spikelet packing broadside to rhachis; lax. Rhachis internodes linear.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 3–5 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 11–17 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 5–10 mm long; 1 length of upper glume; coriaceous; without keels; 3–6 -veined. Lower glume apex obtuse, or acute. Upper glume lanceolate; 5–10 mm long; 1 length of adjacent fertile lemma; coriaceous; without keels; 3–6 -veined. Upper glume apex obtuse, or acute.

FLORETS Fertile lemma oblong; 8–10 mm long; coriaceous; 5 -veined. Lemma apex acute; muticous. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 5–6 mm long. Stigmas 2. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Europe: eastern. Asia-temperate: Siberia, Soviet Middle Asia, China, and Mongolia.

NOTES Triticeae. Fl Eur 1995.

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