The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.


  • 1753. In: Sp. pl.: 263.
  • Maroyi, A. (2006) Preliminary checklist of introduced and naturalized plants in Zimbabwe. Kirkia 18(2) Page 196
  • Marticorena C & R Rodríguez . 1995-2005. Flora de Chile. Vols 1, 2(1-3). Ed. Universidad de Concepción, Concepción. 351 pp., 99 pp., 93 pp., 128 pp. Matthei O. 1995. Manual de las malezas que crecen en Chile. Alfabeta Impresores. 545 p.
  • Syntype: Watson, S. 1871. Rep. U.S. Geol. Explor. Fortieth Par., Bot. 5: 128.


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