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GrassBase - The Online World Grass Flora
Descriptions
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.