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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 calcicola
HABIT Perennial; caespitose. Culms geniculately ascending; 100 cm long; 1–1.5 mm diam.; 5 -noded; with 0.75 of their length below uppermost node. Leaf-sheaths 15 cm long; longer than adjacent culm internode; striately veined; glabrous on surface. Ligule an eciliate membrane; 0.5 mm long; truncate. Leaf-blades 10–20 cm long; 4–5 mm wide; glaucous and dark green; discolorous with last colour beneath. Leaf-blade surface pilose; hairy adaxially.
INFLORESCENCE Inflorescence composed of racemes.
Racemes 1; single; straight, or flexuous; bilateral; 12–20 cm long. Rhachis flattened; ciliate on margins. Spikelet packing broadside to rhachis; regular; 2 -rowed. Rhachis internodes 7–12 mm long (lowest -30).
Spikelets solitary. Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 3–6 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 12–17 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus base acute. Rhachilla internodes 1–2 mm long; pubescent. Floret callus pubescent.
GLUMES Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate, or oblong; 5–8 mm long; coriaceous; without keels; 3–5 -veined. Lower glume surface glabrous. Lower glume apex acuminate; muticous. Upper glume lanceolate, or oblong; 6–10 mm long; coriaceous; without keels; 5–7 -veined. Upper glume surface glabrous. Upper glume apex acuminate; muticous.
FLORETS Fertile lemma lanceolate; 9–11 mm long; coriaceous; without keel; 5 -veined. Lemma surface glabrous, or puberulous. Lemma apex awned; 1 -awned. Principal lemma awn straight; 15–25 mm long overall. Palea lanceolate; 1 length of lemma; 2 -veined. Palea surface puberulous; hairy on back. Palea apex emarginate, or obtuse. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; 1 mm long; membranous; glabrous. Anthers 3; 2 mm long; yellow. Stigmas 2. Ovary pubescent on apex.
FRUIT Caryopsis with adherent pericarp; oblong; sulcate on hilar side; 6 mm long; dark brown; hairy at apex; apex unappendaged. Hilum linear.
DISTRIBUTION Asia-temperate: China.
NOTES Triticeae. Chen 2001.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
