Poaceae
Elymus

Elymus zejensis Prob.

First published in Bot. Zhurn. (Moscow & Leningrad) 69: 257 (1984)
This species is accepted
The native range of this species is SE. Siberia to SW. Russian Far East. It is a perennial and grows primarily in the temperate 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: not threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Perennial. Rhizomes short. Culms slender; 45-65 cm long. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 0.8 mm long. Leaf-blades flat, or convolute; 2-5 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; straight, or arcuate; bilateral; 10-18 cm long. Rhachis flattened. Spikelet packing broadside to rhachis; lax. Rhachis internodes linear. Spikelets solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10.5-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 10.5-12 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; 5-6.5 mm long; 1 length of upper glume; coriaceous; much thinner on margins; without keels; 3-5 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex acute, or acuminate. Upper glume lanceolate; 5-6.5 mm long; 0.5 length of adjacent fertile lemma; coriaceous; with membranous margins; without keels; 3-5 -veined. Upper glume surface scabrous; rough above. Upper glume apex acute, or acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 9-10.5 mm long; coriaceous; 5 -veined. Lemma surface puberulous. Lemma apex acute; awned; 1 -awned. Principal lemma awn straight, or curved; 5-10 mm long overall. Palea 1 length of lemma. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 2.2 mm long.
Distribution
Asia-temperate: Soviet far east.
Reference
Triticeae. Vasc Pl Russ Far East 2006.
[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

  • 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