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Descriptions

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

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

Elymus lazicus

HABIT Perennial; caespitose. Rhizomes short. Culms geniculately ascending; 35–85 cm long. Culm-nodes glabrous, or pubescent. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades convolute; 1.5–3 mm wide. Leaf-blade surface puberulous; hairy adaxially.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 5–10 cm long; bearing few fertile spikelets. Rhachis flattened; pubescent on margins. Spikelet packing broadside to rhachis.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 6–8 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 8–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus 0.2–0.4 mm long; glabrous; obtuse.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume elliptic, or oblong; 6–10 mm long; 0.9 length of upper glume; coriaceous; without keels; 5–7 -veined. Lower glume lateral veins ribbed. Lower glume surface smooth, or scabrous. Lower glume apex entire, or with a unilateral tooth, or dentate; 1–2 -fid; acute; mucronate, or awned; 1 -awned. Lower glume awn 1–6 mm long. Upper glume elliptic, or oblong; 6–10 mm long; 0.75–0.9 length of adjacent fertile lemma; coriaceous; without keels; 5–7 -veined. Upper glume lateral veins ribbed. Upper glume surface smooth, or scabrous. Upper glume apex entire, or with a unilateral tooth, or dentate; 1–2 -fid; acute; mucronate, or awned; 1 -awned. Upper glume awn 1–6 mm long.

FLORETS Fertile lemma lanceolate to oblong; 4–6 mm long; coriaceous; keeled; keeled above; 5 -veined. Lemma surface scabrous; rough above. Lemma margins eciliate, or ciliolate. Lemma apex acute; awned; 1 -awned. Principal lemma awn curved; reflexed; 15–35 mm long overall. Apical sterile florets resembling fertile though underdeveloped.

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

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: Caucasus and western Asia.

NOTES Triticeae. Fl Turk 1993.

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