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 clivorum

HABIT Perennial; caespitose; clumped loosely. Rhizomes short. Culms 45–50 cm long. Leaf-sheaths outer margin hairy. Ligule an eciliate membrane. Leaf-blades flat, or involute; 2–3 mm wide. Leaf-blade surface pubescent; hairy adaxially. Leaf-blade margins cartilaginous; spinulose.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 5–6 cm long. Rhachis flattened; scaberulous on margins. Spikelet packing broadside to rhachis.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 3 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10–11 mm long; falling entire.

GLUMES Glumes similar; shorter than spikelet. Lower glume elliptic, or oblong; 5–6 mm long; 1 length of upper glume; coriaceous; without keels; 3–4 -veined. Lower glume lateral veins ribbed. Lower glume apex acute. Upper glume elliptic, or oblong; 5–6 mm long; 0.8–0.9 length of adjacent fertile lemma; coriaceous; without keels; 3–4 -veined. Upper glume lateral veins ribbed. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate to oblong; 6–7 mm long; coriaceous; keeled; keeled above; 5 -veined. Lemma apex obtuse; muticous, or mucronate. Palea 1 length of lemma. Palea keels ciliolate; adorned above. 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: western Asia.

NOTES Triticeae. Fl Turk 1993.

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