Poaceae
Bothriochloa

Bothriochloa bunyensis B.K.Simon

First published in Austrobaileya 1: 455 (1983)
This species is accepted
The native range of this species is SE. Queensland. It is a perennial and grows primarily in the subtropical 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. Rhizomes elongated. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect, or geniculately ascending; 30-60 cm long; wiry; 2-4 -noded. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths keeled; pilose; with tubercle-based hairs; outer margin hairy. Ligule a ciliolate membrane; 0.5-1 mm long. Leaf-blades 6-12 cm long; 2-4 mm wide. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 2-4; digitate; spreading; 5-10 cm long; bearing 5-12 fertile spikelets on each. Rhachis fragile at the nodes; flattened; glabrous on surface; ciliate on margins. Rhachis internodes linear; 7-8 mm long. Rhachis internode tip transverse. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; flattened; 7-8 mm long; with a translucent median line (also present in internodes); ciliate.
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets represented by single glumes; linear, or lanceolate; 12-13 mm long; longer than fertile. Companion sterile spikelet glumes 7 -veined; glabrous; scabrous on margins. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 8-9 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs 2-3 mm long.
Sterile
Companion sterile spikelets represented by single glumes; linear, or lanceolate; 12-13 mm long; longer than fertile. Companion sterile spikelet glumes 7 -veined; glabrous; scabrous on margins.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 8-9 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs 2-3 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; coriaceous; much thinner on margins; without keels; keel-less except near apex; 13 -veined. Lower glume primary vein scabrous. Lower glume surface flat; scabrous; rough above. Lower glume apex acute. Upper glume lanceolate; 1-keeled; 3 -veined. Upper glume primary vein scabrous.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 4 mm long; 0.5 length of spikelet; hyaline. Fertile lemma oblong; 4 mm long; hyaline; without keel. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 20-25 mm long overall; with twisted column. Column of lemma awn glabrous. Palea lanceolate; 1 mm long; hyaline. Palea apex erose.
Morphology Reproductive morphology Flowers
Anthers 3; 1.5-2 mm long.
Distribution
Australasia: Australia.
Reference
Andropogoneae. Simon 1993.
[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

    • Digital Image © Board of Trustees, RBG Kew 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

  • World Checklist of Vascular plants (WCVP)

    • 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