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 erosiglumis

HABIT Perennial; caespitose. Culms 70–80 cm long. Culm-internodes distally glabrous. Leaf-sheaths glabrous on surface, or pubescent; outer margin hairy. Ligule an eciliate membrane. Leaf-blades flat, or involute; 15–40 cm long; 2–4.5 mm wide. Leaf-blade surface pilose; densely hairy; hairy adaxially.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 9.5–22 cm long. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis; lax.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 5 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; compressed slightly; 12–15 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume elliptic; 7–10.5 mm long; 1 length of upper glume; coriaceous; much thinner on margins; without keels; 5 -veined. Lower glume lateral veins ribbed. Lower glume margins ciliolate. Lower glume apex erose; emarginate, or truncate. Upper glume elliptic; 7–10.5 mm long; 0.75–1 length of adjacent fertile lemma; coriaceous; with hyaline margins; without keels; 5 -veined. Upper glume lateral veins ribbed. Upper glume margins ciliolate. Upper glume apex erose; emarginate, or truncate.

FLORETS Fertile lemma lanceolate to oblong; 9–10 mm long; coriaceous; keeled; keeled above; 5 -veined. Lemma margins ciliolate. Lemma apex emarginate; muticous, or mucronate. Palea 0.8 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.