Abstract
Calycogonium formonense, a new species, is here described from the floristically diverse Massif de la Hotte of southern Haiti. It is compared to C. hispidulum, to which it is likely related. Although the genus Calycogonium is not monophyletic, C. formonense and C. hispidulum are probably related to other species, e.g., C. calycopteris, C. heterophyllum, and C. reticulatum, that exhibit reduced inflorescences and 4-merous flowers having hypanthia with four conspicuous lobes separated by longitudinal grooves and external calyx lobes that are flattened parallel to the floral radii. These distinctive species may form a clade. Calycogonium formonense is distinguished from C. hispidulum by its smaller leaves with the tertiary veins not raised on the abaxial surface, with entire margins (i.e., margin without elongate multicellular hairs), and usually solitary flowers.
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Acknowledgments
We thank Norris Williams, Keeper of the University of Florida Herbarium (FLAS) in the Florida Museum of Natural History, and Kent D. Perkins, Collections Manager, for assistance in processing specimen loans. We also thank Charles Woods, who organized the field trips in 1984 and 1989 on which some of these plants were collected, and Daniel and Tia Cordier, who provided logistical assistance in the Formon region in 1984. We thank Brígido Peguero for his assistance in the field in 2006, and helpful comments. Finally, we thank Fabian A. Michelangeli and Tomas A. Zanoni for their helpful comments. This study was supported, in part, by National Science Foundation Grant BSR-0515636. Travel support was provided by Charles A. Woods, received through a USAID/Haiti grant (contract number 521–0169-C-00–3080–00). The illustration (Fig. 1) was drawn by W.S. Judd.
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Judd, W.S., Skean, J.D., Clase, T. et al. Taxonomic studies in the Miconieae (Melastomataceae). IX. Calycogonium formonense, a new species from the Massif de la Hotte, Haiti. Brittonia 60, 265–270 (2008). https://doi.org/10.1007/s12228-008-9030-3
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DOI: https://doi.org/10.1007/s12228-008-9030-3