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This species is accepted, and its native range is N. Australia.
A specimen from Kew's Herbarium

[GB]
Morphology General Habit
Annual. Culms erect; 100-200 cm long; 3-5 mm diam.; compressible; 5 -noded. Culm-nodes glabrous. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs; 0.25-1 mm long. Leaf-blades 4-6 mm wide. Leaf-blade surface glabrous. Leaf-blade margins cartilaginous; scabrous; ciliate. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 7-15; borne along a central axis; erect, or ascending; unilateral; 2-7 cm long; with branchlets at base of longer racemes. Central inflorescence axis 10-25 cm long. Rhachis subterete; scabrous on margins. Spikelet packing 4 -rowed. Spikelets in pairs. Fertile spikelets pedicelled; subequal. Pedicels unequal; 0.25-1.25 mm long; tip discoid.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; cuspidate; 5-7.5 mm long; falling entire. Rhachilla internodes elongated between glumes.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; cuspidate; 5-7.5 mm long; falling entire. Rhachilla internodes elongated between glumes.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.5 length of spikelet; without keels; 3 -veined. Lower glume surface scabrous; rough on veins. Lower glume margins ciliolate. Lower glume apex acute, or acuminate. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface scabrous; rough generally. Upper glume apex cuspidate.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 5 -veined; scabrous; rough on veins; acuminate; awned. Awn of lower sterile floret 50-85 mm long. Palea of lower sterile floret 0.25-0.5 length of lemma; pubescent; adorned on keels. Fertile lemma ovate; gibbous; 5-6.5 mm long; indurate; much thinner above; shiny; without keel; 5 -veined. Lemma margins involute. Lemma apex cuspidate; laterally pinched. Palea reflexed at apex; indurate.
Morphology Reproductive morphology Flowers
Anthers 3; 1.5-2.1 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid; 2.75-3.5 mm long. Embryo 0.5-0.6 length of caryopsis.
Distribution
Australasia: Australia.
Reference
Paniceae. Michael 1994.

Native to:

Northern Territory, Queensland, Western Australia

Echinochloa kimberleyensis P.W.Michael & Vickery appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jun 22, 1973 Yabuno, T. [s.n.], Western Australia K000958846

First published in Telopea 2: 25 (1980)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

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 Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0