Family:
Poaceae Barnhart
Genus:
Echinochloa P.Beauv.

Echinochloa rotundiflora Clayton

This species is accepted, and its native range is Nigeria to Eritrea.

[GB]
Morphology General Habit
Annual. Culms erect; 60-120 cm long; 4-5 -noded. Ligule absent. Leaf-blades linear, or lanceolate; 7-20 cm long; 6-10 mm wide. Leaf-blade margins cartilaginous; tuberculate-ciliate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 5-8; borne along a central axis; unilateral; 2-5 cm long; secondarily branched. Central inflorescence axis 10-30 cm long. Rhachis angular. Spikelet packing irregular; 3-5 -rowed. Spikelets in pairs. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; obtuse; 3.5-5.5 mm long; falling entire. Spikelet callus oblong; incorporating lowest rhachilla internode with adnate lower glume; 0.5 mm long.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; obtuse; 3.5-5.5 mm long; falling entire. Spikelet callus oblong; incorporating lowest rhachilla internode with adnate lower glume; 0.5 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.3-0.4 length of spikelet; membranous, or chartaceous; without keels; 5 -veined. Lower glume apex obtuse. Upper glume ovate; chartaceous; without keels; 5 -veined. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; chartaceous; 5 -veined; obtuse. Fertile lemma elliptic; 3.5 mm long; indurate; shiny; without keel; 5 -veined. Lemma margins involute. Lemma apex obtuse. Palea reflexed at apex; indurate.
Morphology Reproductive morphology Flowers
Anthers 3; 2.5 mm long.
Distribution
Africa: west tropical, west-central tropical, and northeast tropical.
Reference
Paniceae. FTA.

[FWTA]

Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

Morphology General Habit
Annual, 2–4 ft. high
Ecology
On clay soil with Acacia seyal.

Native to:

Cameroon, Eritrea, Ethiopia, Nigeria, Sudan

Echinochloa rotundiflora Clayton appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Mar 1, 1988 Schimper [1553], Ethiopia K000282404 isotype Yes
Mar 1, 1988 Schimper [1553], Ethiopia K000282405 isotype Yes

First published in Kew Bull. 34: 560 (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.
  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.

Literature

Kew Backbone Distributions

  • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.
  • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.

  • Flora of West Tropical Africa

    Flora of West Tropical Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • 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 2022. 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 2022. 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