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This species is accepted, and its native range is Central & E. Canada to U.S.A.

[GB]
Morphology General Habit
Annual. Culms erect, or geniculately ascending; 80-150 cm long. Culm-nodes glabrous. Leaf-sheaths glabrous on surface. Ligule absent. Leaf-blades 1-2.5 mm wide. Leaf-blade surface glabrous. Leaf-blade margins spinulose.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 8-15; borne along a central axis; spreading; unilateral; 2-8 cm long; with branchlets at base of longer racemes. Central inflorescence axis 10-30 cm long. Rhachis subterete. Spikelet packing crowded; 4 -rowed. Spikelets in pairs. Fertile spikelets pedicelled; subequal. Pedicels unequal.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; gibbous; cuspidate; 3-4 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; gibbous; cuspidate; 3-4 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.33-0.75 length of spikelet; without keels. Lower glume surface scabrous. Lower glume apex cuspidate. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface hispidulous; with tubercle-based hairs. Upper glume apex cuspidate.
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; 5 -veined; hispidulous; with tubercle-based hairs; cuspidate; muticous, or awned. Awn of lower sterile floret 5-25 mm long. Fertile lemma ovate; gibbous; 3-3.8 mm long; indurate; much thinner above; shiny; without keel. Lemma margins involute. Lemma apex acute; laterally pinched. Palea reflexed at apex; indurate.
Morphology Reproductive morphology Flowers
Anthers 3; 0.5-1 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong, or orbicular; 1.2-1.9 mm long.
Distribution
Europe: central. Australasia: Australia. North America: Mexico.
Reference
Paniceae. Gr Texas 1994.

Native to:

Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Mexico, New York, North Carolina, North Dakota, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

Introduced into:

Austria, Belgium, Czechoslovakia, Germany, Leeward Is., Mexico Northeast, Poland

Echinochloa muricata (P.Beauv.) Fernald appears in other Kew resources:

First published in Rhodora 17: 106 (1915)

Accepted by

  • Adolphy, K. & al. (2021). Beiträge zur Flora Nordhein-Westfalens aus dem Jahr 2020 Jahrbuch des Bochumer Botanischen Vereins 12: 199-278.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Engelmaier, P. & Wilhalm, T. (2018). Alien grasses (Poaceae) in the flora of the Eastern Alps Neilreichia 9: 177-245.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Nobis, M. & al. (2019). Contribution to the flora of Asian and European contries: new national and regional vascular plant records, 8 Botany Letters 166: 163-188.

Literature

Kew Backbone Distributions

  • Adolphy, K. & al. (2021). Beiträge zur Flora Nordhein-Westfalens aus dem Jahr 2020 Jahrbuch des Bochumer Botanischen Vereins 12: 199-278.
  • Danihelka, J. Chrtek, J. & Kaplan, Z. (2012). Checklist of vascular plants of the Czech Republic Preslia. Casopsi Ceské Botanické Spolecnosti 84: 647-811.
  • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
  • Engelmaier, P. & Wilhalm, T. (2018). Alien grasses (Poaceae) in the flora of the Eastern Alps Neilreichia 9: 177-245.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Lambion, J., Delvosalle, L. & Duvigneaud, J. (2004). Nouvelle flore de la Belgique du G. D. de Luxembourg, du Nord de la France et des régions voisines, ed. 5: 1-1167. Edition du Patrimoine du Jardin botanique national de Belgique.
  • Nobis, M. & al. (2019). Contribution to the flora of Asian and European contries: new national and regional vascular plant records, 8 Botany Letters 166: 163-188.

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