Erioneuron pulchellum (Kunth) Tateoka
  • Amer. J. Bot. 48: 572 (1961) 

Notes: Distribution: WC. U.S.A. to C. Mexico

General Description

HABIT Perennial; caespitose. Stolons present; with alternating elongated and bunched internodes. Culms 2-15 cm long. Ligule a fringe of hairs; 0.5 mm long. Leaf-blades aciculate; involute; 0.5-1 mm wide. Leaf-blade margins cartilaginous. Leaf-blade apex abruptly acute; hardened. INFLORESCENCE Inflorescence a panicle; comprising 1-5 fertile spikelets; terminal and axillary; shorter than basal leaves; subtended by an inflated leaf-sheath; embraced at base by subtending leaf. Panicle capitate; oblong, or ovate; 1-2 cm long; bearing few spikelets. Spikelets solitary. Fertile spikelets sessile. FERTILE SPIKELETS Spikelets comprising 6-12 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 7-13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. GLUMES Glumes persistent; similar; reaching apex of florets, or shorter than spikelet; shiny. Lower glume ovate; 6-8 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate; mucronate. Upper glume ovate; 6-8 mm long; 1.6-2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate; mucronate. FLORETS Fertile lemma ovate; 3-5 mm long; membranous; without keel; 3 -veined. Lemma surface pilose; hairy below. Lemma margins ciliate; hairy below. Lemma apex lobed; 2 -fid; incised 0.4-0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; straight, or curved; 1.5-2.5 mm long overall. Palea 2 -veined. Palea keels ciliolate. Palea surface pilose; hairy on back. Apical sterile florets resembling fertile though underdeveloped. FRUIT Caryopsis with adherent pericarp; ovoid; laterally compressed; smooth (translucent). Embryo 0.5 length of caryopsis; projecting below grain. DISTRIBUTION North America: southwest USA, south-central USA, and Mexico. NOTES Eragrostideae. Gould.

Distribution Map

  • Native distribution
  • Introduced distribution
Found in
  • Northern America Mexico Mexico Central
  • Mexico Northeast
  • Mexico Northwest
  • Northwestern U.S.A. Colorado
  • Wyoming
  • South-Central U.S.A. New Mexico
  • Texas
  • Southwestern U.S.A. Arizona
  • California
  • Nevada
  • Utah
Introduced into
  • Northern America Southeastern U.S.A. Maryland


  • 1 Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 2 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.
  • 3 Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

 Information From

GrassBase - The Online World Grass Flora
Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora. [accessed 24 January 2012; 14:30 GMT]
  • A © Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
World Checklist of Selected Plant Families
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; Retrieved 2011 onwards
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