Poaceae
Oplismenus

Oplismenus fujianensis S.L.Chen & Y.X.Jin

First published in Acta Phytotax. Sin. 22: 469 (1984)
This species is accepted
The native range of this species is China (Fujian). It is a perennial and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial. Culms erect, or geniculately ascending; robust; 40-50 cm long. Leaf-sheaths subequal to internodes; pilose; with tubercle-based hairs. Ligule a ciliate membrane. Leaf-blade base cordate, or amplexicaul; asymmetrical. Leaf-blades lanceolate, or ovate; 5-10 cm long; 15-25 mm wide. Leaf-blade surface pubescent; densely hairy; hairy on both sides. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 4-12; borne along a central axis; unilateral; 2-5 cm long. Central inflorescence axis 10-15 cm long; pilose. Rhachis angular. Spikelet packing regular; 2 -rowed. Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster; subequal, or the lower smaller.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or ovate; laterally compressed; 2.5-5 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or ovate; laterally compressed; 2.5-5 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1 length of upper glume; 0.5-0.66 length of spikelet; herbaceous; 1-keeled; 3-5 -veined. Lower glume apex acute. Upper glume ovate; herbaceous; 1-keeled. Upper glume apex obtuse; awned; 1 -awned. Upper glume awn 0.5 mm long.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; with palea. Lemma of lower sterile floret ovate; 1 length of spikelet; membranous; 1-keeled; 7-9 -veined. Fertile lemma oblong; dorsally compressed; 2-2.5 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex acute; laterally pinched. Palea involute; coriaceous; without keels.
Distribution
Asia-temperate: China.
Reference
Paniceae. Chen & Jin 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