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 setuliferus

HABIT Perennial. Culms erect, or geniculately ascending; 50–80 cm long. Culm-internodes smooth. Ligule an eciliate membrane. Leaf-blades flat, or involute; 10–20 cm long; 2–3 mm wide; glaucous. Leaf-blade surface scabrous; rough abaxially; puberulous; hairy adaxially.

INFLORESCENCE Inflorescence composed of racemes. Peduncle antrorsely scabrous above.

Racemes 1; single; bilateral; 5–12 cm long. Rhachis flattened; ciliate on margins. Spikelet packing broadside to rhachis; lax. Rhachis internodes linear. Rhachis internode tip flat.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 5–6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10–18 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes collateral; persistent; similar; shorter than spikelet. Lower glume lanceolate; 5–8 mm long; 1 length of upper glume; coriaceous; without keels; 5–7 -veined. Lower glume surface asperulous; rough on veins. Lower glume apex obtuse. Upper glume lanceolate; 5–8 mm long; 0.66–0.75 length of adjacent fertile lemma; coriaceous; without keels; 5–7 -veined. Upper glume surface asperulous; rough on veins. Upper glume apex obtuse.

FLORETS Fertile lemma lanceolate; 7.5–11 mm long; coriaceous; 5 -veined. Lemma apex obtuse; muticous. 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: Soviet Middle Asia.

NOTES Triticeae. Fl Iran 1995.

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