| Note - this takes you off
of our website |
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.
Leymus pubinodis
HABIT Perennial; culms solitary. Basal innovations intravaginal. Culms erect; 75–100 cm long; 2.5–3.5 mm diam. Culm-internodes 10–26.5 cm long; distally glabrous, or pubescent; with reflexed hairs. Culm-nodes constricted; pubescent. Leaf-sheaths loose; 18–25 cm long; mostly shorter than adjacent culm internode; striately veined; glabrous on surface. Ligule an eciliate membrane; 1 mm long; erose. Leaf-blades 12.5–23 cm long; 4.5–8 mm wide. Leaf-blade surface scaberulous; rough adaxially, or on both sides.
INFLORESCENCE Inflorescence composed of racemes.
Racemes 1; single; erect, or drooping; bilateral; 11–14 cm long; 5–8 mm wide. Rhachis flattened; puberulous on surface; ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear; 3–14 mm long.
Spikelets in pairs, or in threes. Fertile spikelets sessile; 2–3 in the cluster.
FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 12–15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 3 mm long; pubescent. Floret callus pubescent.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate, or oblong; 9–10 mm long; 1 length of upper glume; coriaceous; without keels; 3–5 -veined. Lower glume primary vein scabrous. Lower glume surface scabrous. Lower glume apex acuminate. Upper glume lanceolate, or oblong; 9–10 mm long; 1 length of adjacent fertile lemma; coriaceous; without keels; 3–5 -veined. Upper glume primary vein scabrous. Upper glume surface scabrous. Upper glume apex acuminate.
FLORETS Fertile lemma lanceolate; 9–10 mm long; coriaceous; 5 -veined. Lemma surface puberulous. Lemma apex acute; awned; 1 -awned. Principal lemma awn 20–30 mm long overall. Palea keels ciliolate; adorned above. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Anthers 3; 2–2.5 mm long; brown. Stigmas 2. Ovary pubescent on apex.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION Asia-temperate: China.
NOTES Triticeae. Keng 2005.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
