Urochloa notochthona (Domin) Hughes

First published in Bull. Misc. Inform. Kew 1923: 319 (1923)
This species is accepted
The native range of this species is Central & E. Central Australia. It is an annual and grows primarily in the desert or dry shrubland 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
Annual. Culms decumbent; 12-20 cm long. Lateral branches lacking. Ligule a fringe of hairs. Leaf-blades lanceolate; 2-5 cm long; 3-7 mm wide. Leaf-blade margins cartilaginous.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 2-5; borne along a central axis; unilateral; 1-3 cm long. Central inflorescence axis 1-2 cm long. Rhachis wingless; angular. Spikelet packing adaxial. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; 0.5 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; compressed slightly; acute; 4-4.8 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; compressed slightly; acute; 4-4.8 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume oblate; 0.5-0.75 mm long; 0.1-0.15 length of spikelet; membranous; without keels. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 7-9 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 7 -veined; acute. Fertile lemma elliptic; 2.2 mm long; indurate; without keel. Lemma surface rugose. Lemma margins involute. Lemma apex mucronate, or awned; 1 -awned. Principal lemma awn 0.75-1 mm long overall. Palea involute; indurate; without keels.
Distribution
Australasia: Australia.
Reference
Paniceae. WDC 1995.
[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 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