Poaceae
Elymus

Elymus duthiei (Melderis) G.Singh

First published in Taxon 32: 639 (1983)
This species is accepted
The native range of this species is Himalaya to Tibet. It is a perennial and grows primarily in the subalpine or subarctic biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Perennial; caespitose. Culms 40-70 cm long; 3-4 -noded. Culm-internodes smooth. Leaf-sheaths glabrous on surface; outer margin hairy. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 0.2-0.4 mm long; truncate. Leaf-blades 10-30 cm long; 1.5-3 mm wide. Leaf-blade surface pilose; sparsely hairy; hairy adaxially. Leaf-blade margins ciliate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; bilateral; 10-18 cm long. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear. Rhachis internode tip flat. Spikelets solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2.4-2.8 mm long; pubescent.
Fertile
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2.4-2.8 mm long; pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3.5-5 mm long; 0.5-0.6 length of upper glume; coriaceous; much thinner on margins; without keels; 3-5 -veined. Lower glume surface asperulous; rough on veins. Lower glume apex with a unilateral tooth; acute, or acuminate; muticous, or awned; 1 -awned. Lower glume awn 0-3 mm long. Upper glume lanceolate; 6-9 mm long; 0.6-0.75 length of adjacent fertile lemma; coriaceous; with hyaline margins; without keels; 3-5 -veined. Upper glume surface asperulous; rough on veins. Upper glume hairs 2 mm long. Upper glume apex with a unilateral tooth; acute, or acuminate; muticous, or awned; 1 -awned. Upper glume awn 0-3 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 10-12 mm long; coriaceous; 5 -veined. Lemma lateral veins ribbed. Lemma surface puberulous. Lemma apex acute; awned; 1 -awned. Principal lemma awn curved; 20-40 mm long overall. Palea 1 length of lemma. Palea keels ciliolate; adorned above. Palea surface puberulous; hairy on back. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 2.8-3.2 mm long; yellow. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-tropical: India.
Reference
Triticeae. Bor 1994.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0