Elymus sajanensis

HABIT Perennial; caespitose. Culms 25–35 cm long. Leaves basal and cauline. Ligule an eciliate membrane. Leaf-blades 2.5–5 mm wide. Leaf-blade surface scabrous; glabrous, or pubescent.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 4.5–7 cm long. Spikelet packing broadside to rhachis. Rhachis internodes linear.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10–13 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; asymmetrical (at apex); 6–8 mm long; 1 length of upper glume; coriaceous; without keels; 3–5 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex acute; awned; 1 -awned. Lower glume awn 1 mm long. Upper glume lanceolate; asymmetrical (at apex); 6–8 mm long; 0.5–0.75 length of adjacent fertile lemma; coriaceous; without keels; 3–5 -veined. Upper glume surface scabrous; rough on veins. Upper glume apex acute; awned; 1 -awned. Upper glume awn 1 mm long.

FLORETS Fertile lemma lanceolate; 8–10 mm long; coriaceous; 5 -veined. Lemma surface scabrous; rough above. Lemma apex dentate; 2 -fid; acute; awned; 1 -awned. Principal lemma awn from a sinus; 1–2 mm long overall. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

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

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: Siberia and Soviet far east.

NOTES Triticeae. Fl USSR 1995.

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