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This species is accepted, and its native range is N. Western Australia to NW. Northern Territory.

[GB]
Morphology General Habit
Annual. Culms erect; 80-200 cm long; 3-6 mm diam.; 6-7 -noded. Culm-internodes terete; striate; smooth; distally glabrous. Culm-nodes glabrous. Lateral branches lacking, or sparse. Leaf-sheaths loose; mostly shorter than adjacent culm internode; without keel, or keeled; striately veined; smooth; glabrous on surface; outer margin glabrous, or hairy. Ligule a fringe of hairs; 1-1.5 mm long. Collar pubescent. Leaf-blades 12-25 cm long; 6-12 mm wide. Leaf-blade midrib conspicuous. Leaf-blade venation with 12 secondary veins. Leaf-blade surface smooth, or scaberulous; glabrous. Leaf-blade margins cartilaginous; scabrous; glabrous, or tuberculate-ciliate; hairy at base. Leaf-blade apex acuminate, or attenuate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes numerous; borne along a central axis; erect, or ascending; unilateral; 3-7 cm long; simple, or with branchlets at base of longer racemes. Rhachis angular; scabrous on margins. Spikelet packing lax; 4 -rowed. Raceme-bases hirsute. Spikelets in pairs. Fertile spikelets pedicelled; subequal. Pedicels unequal; 0.5-1 mm long; scabrous; tip discoid.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; cuspidate; 6 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; cuspidate; 6 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.5-0.66 length of spikelet; without keels; 5 -veined. Lower glume surface asperulous. Lower glume apex acute, or acuminate. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 5-7 -veined. Upper glume surface scabrous; rough on veins. Upper glume apex acuminate, or caudate; muticous, or awned; 1 -awned. Upper glume awn 5-10 mm long.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 7 -veined; flat across back, or concave across back; scabrous, or spinulose; rough on veins; acuminate; awned. Awn of lower sterile floret 20-90 mm long. Palea of lower sterile floret 1 length of lemma. Fertile lemma elliptic; gibbous; 4.5-5 mm long; indurate; much thinner above; yellow; shiny; without keel; 5 -veined. Lemma lateral veins obscure. Lemma surface striate. Lemma margins involute. Lemma apex cuspidate; scabrous. Palea reflexed at apex; 1 length of lemma; indurate.
Morphology Reproductive morphology Flowers
Anthers 3; 2.5-2.8 mm long; orange.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid, or oblong; 3-3.1 mm long; pallid, or light brown. Embryo 0.6 length of caryopsis.
Distribution
Australasia: Australia.
Reference
Paniceae. Mich & Vick 1997.

Native to:

Northern Territory, Western Australia

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

First published in Telopea 2: 27 (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

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