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 scabridulus

HABIT Perennial; caespitose. Culms geniculately ascending; 50–60 cm long; 2–3 -noded. Culm-internodes smooth. Culm-nodes pubescent. Leaf-sheaths 5–12 cm long; smooth. Ligule an eciliate membrane. Leaf-blades convolute; 15–20 cm long; 3 mm wide. Leaf-blade surface scaberulous; rough on both sides.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 8–10 cm long. Rhachis scabrous on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 5–6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes scaberulous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 9–10 mm long; 0.9 length of upper glume; coriaceous; without keels; 3–5 -veined. Lower glume surface asperulous; rough on veins. Lower glume apex with a unilateral tooth; acute. Upper glume lanceolate; 11–12 mm long; 1.5 length of adjacent fertile lemma; coriaceous; without keels; 3–5 -veined. Upper glume surface asperulous; rough on veins. Upper glume apex with a unilateral tooth; acute.

FLORETS Fertile lemma lanceolate; 7–8 mm long; coriaceous; 5 -veined. Lemma surface scaberulous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 12–15 mm long overall. Palea 1 length of lemma. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 1.5 mm long. Stigmas 2. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China and Mongolia.

NOTES Triticeae. Ohwi 1995.

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