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This species is accepted, and its native range is Bolivia to Brazil and NE. Argentina.

[GB]
Habit
Perennial; caespitose; clumped densely. Culms erect; 15-50 cm long. Ligule an eciliate membrane. Leaf-blades 10-25 cm long; 2-4 mm wide. Leaf-blade apex attenuate.
Inflorescences
Inflorescence composed of racemes; terminal. Racemes 2-7; paired, or digitate; drooping; 3-4 cm long. Central inflorescence axis 0.5-1 cm long. Rhachis fragile at the nodes; flattened; ciliate on margins. Rhachis internodes linear. Rhachis internode tip oblique; flat. Raceme-bases filiform; 2-10 mm long; glabrous. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; flattened; 1-2 mm long; villous.
Spikelets
Basal sterile spikelets well-developed; 4-9 in number; male; lanceolate; 5-6 mm long; equalling fertile. Basal sterile spikelet glumes herbaceous; villous. Companion sterile spikelets well-developed; male; elliptic; dorsally compressed; 5-6 mm long; as long as fertile; separately deciduous. Companion sterile spikelet callus cuneate; 0.5 mm long; obtuse. Companion sterile spikelet glumes herbaceous; tuberculate; villous; acute. Companion sterile spikelet lemmas 2; enclosed by glumes. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 5-7.5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus linear; 1 mm long; bearded; base pungent; attached obliquely. Spikelet callus hairs red.
Sterile
Basal sterile spikelets well-developed; 4-9 in number; male; lanceolate; 5-6 mm long; equalling fertile. Basal sterile spikelet glumes herbaceous; villous. Companion sterile spikelets well-developed; male; elliptic; dorsally compressed; 5-6 mm long; as long as fertile; separately deciduous. Companion sterile spikelet callus cuneate; 0.5 mm long; obtuse. Companion sterile spikelet glumes herbaceous; tuberculate; villous; acute. Companion sterile spikelet lemmas 2; enclosed by glumes.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 5-7.5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus linear; 1 mm long; bearded; base pungent; attached obliquely. Spikelet callus hairs red.
Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 5-7.5 mm long; 1 length of spikelet; coriaceous; without keels; 8 -veined. Lower glume surface with a longitudinal median groove; pilose. Lower glume apex obtuse. Upper glume lanceolate; coriaceous; without keels. Upper glume apex obtuse.
Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 3-4 mm long; hyaline; 2 -veined; truncate. Fertile lemma linear; 5 mm long; cartilaginous; without keel; 1 -veined. Lemma apex entire; acute; awned; 1 -awned. Principal lemma awn geniculate; 30-40 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
Fruits
Disseminule comprising a spikelet.
Distribution
South America: western South America, Brazil, and southern South America.
Reference
Andropogoneae. WDC.

Native to:

Argentina Northeast, Bolivia, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Paraguay, Uruguay

Agenium villosum (Nees) Pilg. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 2014 Clayton, W.D. [4317], Brazil K001072048
Jan 1, 2014 Pereira, E. [5250], Brazil K001072031
Jan 1, 2014 Eiten, G. [4413], Brazil K001072035
Jan 1, 2014 Smith, L.B. [14713], Brazil K001072036
Jan 1, 2014 Claussen, P. [s.n.], Brazil K001072041
Jan 1, 2014 Claussen, P. [s.n.], Brazil K001072042
Jan 1, 2014 Riedel [2133], Brazil K001072043
Jan 1, 2014 Burchell, W.J. [4044], Brazil K001068672
Jan 1, 2014 Regnell, A.F. [II1382], Brazil K001072039
Jan 1, 2014 Glaziou, A.F.M. [20146], Brazil K001072038
Jan 1, 2014 Glaziou, A.F.M. [22963], Brazil K001072044
Jan 1, 1992 Brooks, R.R. [BRASPEX 96], Brazil K001072046
Apr 1, 1981 Glaziou, A.F.M. [22363], Brazil K001072037
Feb 1, 1974 Smith, L.B. [15911], Brazil K001072047
Brazil K000632816
Clayton, W.D. [s.n.], Brazil K001072034
Lindeman, J.C. [417], Brazil K001072032
Gardner [4061], Goiás K000632809 Unknown type material
Gardner [4061], Goiás K000632810
Riedel [712], Brazil K000632814
Riedel [s.n.], Brazil K000632813
Riedel [s.n.], Brazil K000632815
Davidse, G. [12171], Brazil K001072045
Sellow [s.n.], Brazil K000632811
Sellow [s.n.], Brazil K000632812
Sellow [s.n.], Brazil K000632817
Sellow [s.n.], Brazil K000632818
Sellow [s.n.], Brazil K000632819
Sellow [s.n.], Brazil K000632820
Sellow [s.n.], Brazil K000632821
Handro, O. [87], Brazil K001072049
Dombrowski, L.T. [2290], Brazil K001072033
Hatschbach, G.G. [25096], Brazil K001072040
Hatschbach, G.G. [21015], Brazil K001072030

First published in Repert. Spec. Nov. Regni Veg. 43: 82 (1938)

Accepted by

  • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
  • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
  • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.

GrassBase - The Online World Grass Flora
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
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

Neotropikey
Milliken, W., Klitgard, B. and Baracat, A. (2009 onwards), Neotropikey - Interactive key and information resources for flowering plants of the Neotropics.
http://creativecommons.org/licenses/by/3.0