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 buschianus

HABIT Perennial; caespitose; clumped densely. Culms erect, or geniculately ascending; 45–80 cm long. Culm-internodes distally pruinose. Ligule an eciliate membrane. Leaf-blades flat, or convolute; 10–20 cm long; 3–6 mm wide. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 8–17 cm long. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis; crowded. Rhachis internodes linear; 10–15 mm long. Rhachis internode tip flat.

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; 11–20 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes collateral; persistent; similar; shorter than spikelet. Lower glume lanceolate; 7–10 mm long; 1 length of upper glume; coriaceous; without keels; 5–7 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex dentate; 2–3 -fid; muticous, or mucronate. Upper glume lanceolate; 7–10 mm long; 1 length of adjacent fertile lemma; coriaceous; without keels; 5–7 -veined. Upper glume surface scabrous; rough on veins. Upper glume apex dentate; 2–3 -fid; muticous, or mucronate.

FLORETS Fertile lemma lanceolate, or elliptic; 8–10 mm long; coriaceous; 5 -veined. Lemma surface pubescent. Lemma apex dentate; 2 -fid; mucronate. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3. Stigmas 2. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: Caucasus.

NOTES Triticeae. Fl Iran 1995.

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