01530nas a2200157   4500008004100000022001400041245007600055210007000131300001200201490000800213520103300221100002101254700001501275700001901290856006301309       2003                        eng d  a0378-269700aFlower size dimorphism in diclinous plants native to La Réunion Island0 aFlower size dimorphism in diclinous plants native to La Réunion   a163-1730 v2403 a<p class="rtejustify">Although many diclinous plants have a flower size dimorphism, the causes and ecological correlates of dimorphism in flower size remain poorly understood. In this paper we quantify the frequency and distribution of flower size dimorphism in the native flora of La R&eacute;union Island. The frequency of flower size dimorphism is lower than in a previous global study suggesting that the dimorphism may limit colonisation success. Flower size dimorphism is significantly more frequent in endemic taxa compared to indigenous taxa, a trend that is particularly evident at the species level, due to the large number of species with male flowers bigger than female flowers and is more common in species-rich lineages. These results suggest that flower size dimorphism may be associated with species divergence. The direction of dimorphism varies between dioecious and monoecious species, suggesting that the mechanisms acting on flower size variation differ in species with these different sexual systems.</p>
1 aHumeau, Laurence1 aPailler, T1 aThompson, J, D  uhttp://link.springer.com/article/10.1007/s00606-003-0011-4