Poaceae
Elymus

Elymus curtiaristatus (L.B.Cai) S.L.Chen & G.H.Zhu

First published in Novon 12: 426 (2002)
This species is accepted
The native range of this species is Tibet. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial. Butt sheaths villous. Culms erect; 40-65 cm long; 1-2 mm diam.; 3 -noded. Culm-internodes antrorsely scabrous. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.5 mm long; truncate. Leaf-blades involute; 4-10 cm long; 2-3 mm wide. Leaf-blade surface hirsute; sparsely hairy; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; straight, or arcuate; bilateral; 9-12 cm long. Rhachis flattened; glabrous on surface; scabrous on margins. Spikelet packing broadside to rhachis. Rhachis internodes 7-12 mm long. Spikelets solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 13-19 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent. Floret callus pubescent.
Fertile
Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 13-19 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent. Floret callus pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar. Lower glume lanceolate; 5-6 mm long; coriaceous; without keels; 3-5 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex acuminate. Upper glume lanceolate; 5-6 mm long; coriaceous; without keels; 3-5 -veined. Upper glume surface scabrous; rough on veins. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 8-10 mm long; coriaceous; 5 -veined. Lemma surface scabrous; rough above. Lemma margins scabrous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 5-10 mm long overall. Palea 1.1 length of lemma; 2 -veined. Palea keels ciliolate; adorned above. Palea surface scabrous. Palea apex truncate, or obtuse. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 2.3-3.2 mm long; black.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China.
Reference
Triticeae. Fl China 2005.
[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