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

References

  • Bailey, L. H. & E. Z. Bailey. 1976. Hortus Third i–xiv, 1–1290. MacMillan, New York.   http://www.tropicos.org/Reference/922 External link.
  • Bailey, L.H. & Bailey, E.Z. (1976) Hortus Third. A concise Dictionary of Plants Cultivated in the United States and Canada Macmillan Publishing Co, Inc., New York
  • Bailey, L.H. (1949) Manual of Cultivated Plants Revised edition. Macmillan, New York.
  • Barringer, K. & W. Burger. 2000. Family 193. Scrophulariaceae. In: W. Burger (ed.), Flora Costaricensis. Fieldiana, Bot., n.s. 41: 1–69.   http://www.tropicos.org/Reference/1017422 External link.
  • Coen, E. 2003. Way to grow. New Scientist. 8 November: 44-47.
  • Crawford, B. C. W.; Nath, U.; Carpenter, R.; Coen, E. S. 2004. Cincinnata controls both cell differentiation and growth in petal lobes and leaves of antirrhinum. Plant Physiology. 135(1): 244-253.
  • Dyer, A.G.; Whitney, H.M.; Arnold, S.E.J.; Glover, B. J.; Chittka, L. 2007. Mutations perturbing petal cell shape and anthocyanin synthesis influence bumblebee perception of Antirrhinum majus flower colour. Arthropod-Plant Interactions. 1: 45-55.
  • Idárraga-Piedrahita, A., R. D. C. Ortiz, R. Callejas Posada & M. Merello. 2011. Flora de Antioquia. Catálogo de las Plantas Vasculares, vol. 2. Listado de las Plantas Vasculares del Departamento de Antioquia. Pp. 1-939.   http://www.tropicos.org/Reference/100008595 External link.
  • Molina Rosito, A. 1975. Enumeración de las plantas de Honduras. Ceiba 19(1): 1–118.   http://www.tropicos.org/Reference/866 External link.
  • Nath, U; Crawford, BCW;Carpenter, R; Coen, E. 2003. Genetic control of surface curvature. Science. 299(5611): 1404-1407.
  • Nelson, C. H. 2008. Cat. Pl. Vasc. Honduras 1–1576.   http://www.tropicos.org/Reference/100000091 External link.
  • Standley, P. C. & L. O. Williams. 1973. Scrophulariaceae. In Standley, P. C. & L. O. Williams (eds.), Flora of Guatemala - Part IX, Number 4. Fieldiana, Bot. 24(9/4): 319–416.   http://www.tropicos.org/Reference/6593 External link.
  • USDA, NRCS. 2007. The PLANTS Database (http://plants.usda.gov). National Plant Data Center, Baton Rouge.   http://www.tropicos.org/Reference/100004579 External link.
  • Whitney, HM: Chittka, L; Bruce, TJA; Glover, BJ. 2009. Conical epidermal cells allow bees to grip flowers and increase foraging efficiency. Current Biology. 19(11): 948-953.

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