BMC Evolutionary Biology BioMed Central Research article Open Access Diversification of myco-heterotrophic angiosperms: Evidence from Burmanniaceae Vincent Merckx*1, Lars W Chatrou2, Benny Lemaire1, Moses N Sainge3, Suzy Huysmans1 and Erik F Smets1,4 Address: 1Laboratory of Plant Systematics, K.U. Leuven, Kasteelpark Arenberg 31, P.O. Box 2437, BE-3001 Leuven, Belgium, 2National Herbarium of the Netherlands, Wageningen University Branch, Generaal Foulkesweg 37, NL-6703 BL Wageningen, The Netherlands, 3Centre for Tropical Forest Sciences (CTFS), University of Buea, Department of Plant & Animal Sciences, P.O. Box 63, Buea, Cameroon and 4National Herbarium of the Netherlands, Leiden University Branch, P.O. Box 9514, NL-2300 RA, Leiden, The Netherlands Email: Vincent Merckx* -
[email protected]; Lars W Chatrou -
[email protected]; Benny Lemaire -
[email protected]; Moses N Sainge -
[email protected]; Suzy Huysmans -
[email protected]; Erik F Smets -
[email protected] * Corresponding author Published: 23 June 2008 Received: 25 February 2008 Accepted: 23 June 2008 BMC Evolutionary Biology 2008, 8:178 doi:10.1186/1471-2148-8-178 This article is available from: http://www.biomedcentral.com/1471-2148/8/178 © 2008 Merckx et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: Myco-heterotrophy evolved independently several times during angiosperm evolution. Although many species of myco-heterotrophic plants are highly endemic and long- distance dispersal seems unlikely, some genera are widely dispersed and have pantropical distributions, often with large disjunctions.