Mnesithea laevis (Retz.) Kunth

First published in Révis. Gramin. 1: 154 (1829)
This species is accepted
The native range of this species is Tropical & Subtropical Asia to NW. Pacific. It is a perennial and grows primarily in the seasonally dry tropical 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 erect; 50-100 cm long. Culm-internodes solid. Lateral branches ample. Ligule an eciliate membrane. Leaf-blades 8-35 cm long; 3-5 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes; embraced at base by subtending leaf. Racemes 1; single; smoothly terete; 10-20 cm long. Rhachis subcylindrical and excavated. Spikelet packing abaxial. Rhachis internodes cuneate; 3-5 mm long. Rhachis internode tip transverse; crateriform. Spikelets sunken; in threes (or paired towards tip of raceme). Fertile spikelets sessile; 2 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels fused to internode; united at tip; linear.
Sterile
Companion sterile spikelets rudimentary; orbicular; dorsally compressed; 0.5-1 mm long; shorter than fertile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 3.5-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely. Companion sterile spikelets rudimentary; orbicular; dorsally compressed; 0.5-1 mm long; shorter than fertile.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 3.5-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; indurate; without keels. Lower glume apex obtuse. Upper glume oblong; cartilaginous; without keels. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline. Fertile lemma lanceolate; 2.5-4 mm long; hyaline; without keel; 0 -veined.
Morphology Reproductive morphology Flowers
Lodicules absent. Anthers 3; 2.5-3 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong; biconvex; 2 mm long.
Distribution
Asia-temperate: China and eastern Asia. Asia-tropical: India, Indo-China, and Malesia. Pacific: northwestern.
Reference
Andropogoneae. Bor.
[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
  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. 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 2024. 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