Poaceae
Elymus

Elymus coreanus Honda

First published in J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 3: 17 (1930)
This species is accepted
The native range of this species is S. Russian Far East to Korea. 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: confident
[AERP]

Morphology General Habit
Perennial; culms solitary. Rhizomes short. Butt sheaths pubescent. Culms erect; 60-110 cm long; 3-4 -noded. Culm-internodes distally glabrous. Leaves basal and cauline. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blades linear, or lanceolate; 15-47 cm long; 6-11 mm wide. Leaf-blade surface scabrous; rough on both sides; pubescent; sparsely hairy, or moderately hairy; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Peduncle pubescent above, or pilose above. Racemes 1; single; straight, or arcuate; bilateral; 8-13 cm long; 10 mm wide. Rhachis pubescent on surface. Spikelet packing broadside to rhachis; lax. Spikelets in pairs. Fertile spikelets sessile; 2 in the cluster.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-5 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 12-20 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes scaberulous.
Fertile
Spikelets comprising 2-5 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 12-20 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes scaberulous.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume subulate; 7-8 mm long; 0.75-0.8 length of upper glume; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Upper glume subulate; 8.5-10 mm long; 1 -veined. Upper glume lateral veins absent.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate, or elliptic; 9-11 mm long; coriaceous; without keel; 5-7 -veined. Lemma surface scaberulous; glabrous. Lemma apex attenuate; awned; 1 -awned. Principal lemma awn 2-3 mm long overall. Palea 8-10 mm long; 0.9 length of lemma. Palea keels ciliolate. Palea apex dentate; 2 -fid.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 3; 6-7 mm long. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex.
Distribution
Asia-temperate: Soviet far east, China, and eastern Asia.
Reference
Triticeae. Koyama 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

  • 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