Poaceae
Elymus

Elymus macrochaetus (Nevski) Tzvelev

First published in Novosti Sist. Vyssh. Rast. 9: 61 (1972)
This species is accepted
The native range of this species is Central Asia. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms 100-135 cm long. Culm-internodes distally pubescent. Leaf-sheaths antrorsely scabrous. Ligule an eciliate membrane. Leaf-blades 4-8 mm wide. Leaf-blade surface scabrous; rough abaxially; pilose; densely hairy; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Peduncle antrorsely scabrous above. Racemes 1; single; bilateral; 8.5-20 cm long. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis; lax. Rhachis internodes linear. Spikelets solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 20-22 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 20-22 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 12-16 mm long; 1 length of upper glume; coriaceous; without keels; 7-9 -veined. Lower glume surface scabrous. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 1-3 mm long. Upper glume lanceolate; 12-16 mm long; 1 length of adjacent fertile lemma; coriaceous; without keels; 7-9 -veined. Upper glume surface asperulous. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1-3 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 12-16 mm long; coriaceous; 5 -veined. Lemma surface pubescent. Lemma apex acute; awned; 1 -awned. Principal lemma awn straight, or curved; 30-35 mm long overall. Palea 9-13.5 mm long. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3. Stigmas 2. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: Soviet Middle Asia.
Reference
Triticeae. Fl USSR 1995.
[GB]

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]

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