Poaceae
Bromus

Bromus sinensis Keng f.

First published in Acta Bot. Yunnan. 4: 349 (1982)
This species is accepted
The native range of this species is Tibet to S. Central China. 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, or caespitose; clumped loosely. Culms 50-60 cm long. Culm-nodes black; pubescent. Leaf-sheaths longer than adjacent culm internode; pilose. Leaf-sheath auricles absent, or falcate. Ligule an eciliate membrane; 1-3 mm long; brown; glabrous on abaxial surface, or pubescent on abaxial surface; entire, or erose; truncate. Leaf-blades erect; flat, or conduplicate; 12-24 cm long; 3-5 mm wide. Leaf-blade midrib keeled beneath. Leaf-blade surface glabrous, or pilose; hairy adaxially, or on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; nodding; 12-24 cm long. Primary panicle branches spreading; 2-4 -nate; 5-10 cm long; bearing 1-3 fertile spikelets on each lower branch. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 4-8 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or oblong; laterally compressed; 12-20 mm long; 5-8 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-2 mm long; pubescent.
Fertile
Spikelets comprising 4-8 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or oblong; laterally compressed; 12-20 mm long; 5-8 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-2 mm long; pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume lanceolate; 8-12 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface pubescent. Lower glume apex acuminate, or setaceously attenuate. Upper glume lanceolate; 11-17 mm long; 1 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume surface pubescent. Upper glume apex acuminate, or setaceously attenuate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 10-15 mm long; chartaceous; without keel; 5 -veined. Lemma surface pubescent, or pilose. Lemma apex entire, or dentate; 2 -fid; awned; 1 -awned. Principal lemma awn subapical; reflexed; 8-14 mm long overall. Palea oblong; 8-10 mm long. Palea keels contiguous above a sulcus. Palea surface puberulous; hairy on back. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 1.8-3 mm long. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex; apex fleshy. Hilum linear.
Distribution
Asia-temperate: China.
Reference
Bromeae. Keng 2000.
[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