Apocopis anomalus Bor

First published in Kew Bull. 12: 415 (1957 publ. 1958)
This species is accepted
The native range of this species is Myanmar. It is a perennial and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial. Butt sheaths glabrous. Culms 10-20 cm long; 2 -noded. Culm-nodes constricted; glabrous. Leaf-sheaths pilose; with tubercle-based hairs. Ligule an eciliate membrane; 1 mm long. Leaf-blades linear, or lanceolate; flat, or involute, or revolute; 4-8 cm long; 2-3 mm wide. Leaf-blade surface scaberulous; rough adaxially; pilose; sparsely hairy; hairy abaxially; with tubercle-based hairs. Leaf-blade apex attenuate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 2-3; paired, or digitate; 1.5-2.5 cm long. Rhachis fragile at the nodes; ciliate on margins. Rhachis hairs white. Rhachis internodes linear; 2.5-3 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; 3-4 mm long; ciliate.
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets well-developed; male; elliptic; dorsally compressed; 3 mm long; longer than fertile. Companion sterile spikelet glumes chartaceous; 3-5 -veined; pilose; truncate; muticous. Companion sterile spikelet lemmas 2; enclosed by glumes; 1-awned (geniculately); with 5 mm long awn. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; truncate; 5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; attached transversely.
Sterile
Companion sterile spikelets well-developed; male; elliptic; dorsally compressed; 3 mm long; longer than fertile. Companion sterile spikelet glumes chartaceous; 3-5 -veined; pilose; truncate; muticous. Companion sterile spikelet lemmas 2; enclosed by glumes; 1-awned (geniculately); with 5 mm long awn.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; truncate; 5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; attached transversely.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 4.5 mm long; 0.9 length of spikelet; chartaceous; much thinner above; without keels; 5 -veined. Lower glume lateral veins distinct. Lower glume surface pilose; hairy below. Lower glume hairs white. Lower glume apex erose; truncate. Upper glume oblong; 1 length of spikelet; chartaceous; with hyaline margins; 3 -veined. Upper glume surface pilose. Upper glume apex truncate.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male; with palea. Lemma of lower sterile floret oblong; 4.5 mm long; 0.9 length of spikelet; hyaline; 0 -veined; without midvein; without lateral veins; pilose; hairy at apex; truncate. Fertile lemma oblong; 4 mm long; hyaline; without keel; 1 -veined. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 8 mm long overall; with twisted column. Column of lemma awn hispidulous. Palea hyaline; 2 -veined; without keels.
Morphology Reproductive morphology Flowers
Lodicules absent. Anthers 2; 1-2 mm long.
Distribution
Asia-tropical: Indo-China.
Reference
Andropogoneae. Bor.
[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
  • 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