Poaceae
Elymus

Elymus sibinicus Kotukhov

First published in Bot. Zhurn. (Moscow & Leningrad) 77(6): 93 (1992)
This species is accepted
The native range of this species is Kazakhstan. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped densely. Culms geniculately ascending; 70-120 cm long. Culm-internodes smooth; distally glabrous. Culm-nodes glabrous, or pubescent. Ligule an eciliate membrane. Leaf-blades 8-15 mm wide. Leaf-blade surface scaberulous; rough abaxially; pilose; sparsely hairy; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; straight; bilateral; 13-18 cm long. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis; crowded. 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; 10-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose. Floret callus pilose.
Fertile
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose. Floret callus pilose.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 9-11 mm long; 1 length of upper glume; coriaceous; much thinner on margins; without keels; 5-7 -veined. Lower glume surface scabrous. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 2-5 mm long. Upper glume lanceolate; 9-11 mm long; 1 length of adjacent fertile lemma; coriaceous; with hyaline margins; without keels; 5-7 -veined. Upper glume surface scabrous. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 2-5 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 9-10 mm long; coriaceous; 5 -veined. Lemma surface scabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn curved; 10-16 mm long overall. Palea 1 length of lemma. Palea keels scaberulous. Palea surface scaberulous. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 1.5-1.8 mm long.
Distribution
Asia-temperate: Soviet Middle Asia.
Reference
Triticeae. Kotuchov 2006.
[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: confident
[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

  • 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