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

  Bibliography

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