Apocopis wrightii Munro

First published in Proc. Amer. Acad. Arts 4: 363 (1865)
This species is accepted
The native range of this species is S. China to Indo-China. It is a perennial and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Annual; caespitose. Culms 30-60 cm long; wiry; 6-7 -noded. Lateral branches ample; arising from lower culm. Leaf-sheaths glabrous on surface, or pilose. Ligule an eciliate membrane; 1 mm long. Leaf-blades linear; 8-12 cm long; 3-6 mm wide. Leaf-blade surface glabrous, or pilose; with tubercle-based hairs. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 2; paired; 3-5 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs tawny. Rhachis internodes linear; 1.5-2 mm long. Spikelets appressed; in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels adnate at the base to lower glume of sessile spikelet; linear; ciliate; with tawny hairs.
Morphology Reproductive morphology Inflorescences Spikelets
Basal sterile spikelets well-developed; 1 in number. Companion sterile spikelets represented by barren pedicels. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong, or obovate; dorsally compressed; 4.5-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs tawny.
Sterile
Basal sterile spikelets well-developed; 1 in number. Companion sterile spikelets represented by barren pedicels.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong, or obovate; dorsally compressed; 4.5-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs tawny.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; firmer than fertile lemma. Lower glume oblong, or obovate; 4.5-6 mm long; 0.9 length of spikelet; chartaceous; much thinner above (and red-brown); light green; without keels. Lower glume primary vein falling short of apex. Lower glume lateral veins transversely connected at apex; all falling short of apex. Lower glume surface glabrous, or hispid. Lower glume apex erose; truncate. Upper glume oblong; 1 length of spikelet; chartaceous.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male; with palea. Lemma of lower sterile floret lanceolate; hyaline. Fertile lemma lanceolate, or oblong; chartaceous; without keel. Lemma apex entire, or dentate; 2 -fid; awned; 1 -awned. Principal lemma awn apical, or from a sinus; geniculate; 20-30 mm long overall; with twisted column.
Morphology Reproductive morphology Flowers
Anthers 2.5 mm long.
Distribution
Asia-temperate: China. Asia-tropical: Indo-China.
Reference
Anomochloeae. Fl China 2004.
[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: not 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
  • Herbarium Catalogue Specimens

    • 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