Biologia floral, reprodução e filogenia do genêro Cirrhaea Lindl. (Orchidaceae) e evolução dos sistemas de polinização em Stanhopeinae

TL;DRAbstract

The genus Cirrhaea Lindl. (Orchidaceae) comprises seven species distributed mainly in Southeastern Brazil. We have studied the phenology, the floral biology and the reproduction of species of Cirrhaea, as well as their morphology and anatomy of secretory structures. Field observations were conducted to investigate the pollinators and the mechanisms of pollination. Furthermore, fresh flowers were collected and fixed for the studies of morpho-anatomy and hand pollinations were performed in order to verify the reproductive system. The amount of potentially viable seeds obtained in each treatment was also determined, and floral fragrances were analyzed. The phylogenetic hypothesis of Cirrhaea and the study of evolution of pollination systems of Stanhopeinae were developed based on sequencing of the regions trnL-F and matK (cpDNA) and ITS (nrDNA). The data obtained here for Cirrhaea species were added to those previously published for other Stanhopeinae genera in order to prepare the study

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