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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 schugnanicus

HABIT Perennial; caespitose. Culms erect, or geniculately ascending; 16–60 cm long. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades flat, or convolute; 4–15 cm long; 2–3 mm wide. Leaf-blade surface pubescent; densely hairy; hairy abaxially.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; arcuate; bilateral; 7–10 cm long. Rhachis flattened; smooth on margins, or scabrous on margins. Spikelet packing broadside to rhachis; lax. Rhachis internodes oblong; 5–12 mm long.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 5–7 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 15–20 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate, or oblong; 3.5–5.5(–6) mm long; 0.7–0.8 length of upper glume; coriaceous; without keels; 3 -veined. Lower glume lateral veins ribbed. Lower glume surface scabrous. Lower glume apex acute; muticous, or awned; 1 -awned. Lower glume awn 0–2 mm long. Upper glume lanceolate, or oblong; 5–6.5 mm long; 0.6–0.7 length of adjacent fertile lemma; coriaceous; without keels; 5 -veined. Upper glume lateral veins ribbed. Upper glume surface scabrous. Upper glume apex acute; muticous, or awned; 1 -awned. Upper glume awn 0–2 mm long.

FLORETS Fertile lemma lanceolate, or oblong; 8–10 mm long; coriaceous; keeled; keeled above; 5 -veined. Lemma surface scabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn curved; reflexed; 30–35 mm long overall. Palea 1 length of lemma. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; elliptic; membranous. Anthers 3; 2–2.5 mm long. Stigmas 2. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: Soviet Middle Asia. Asia-tropical: India.

NOTES Triticeae. Fl Pak 1993.

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