Abstract
Four new species of Forsteronia are described and illustrated, a distribution map and a key for the species of Forsteronia in Brazil provided, and Forsteronia myriantha lectotypified. Forsteronia manausana resembles F. brevifolia, but differs by its glabrous filaments and smaller leaves. Forstersonia nitida shows affinity to F. tarapotensis but is distinguished by the combination of subcoriaceous, elliptic leaves, large-bracted inflorescences, and somewhat larger flowers.Forsteronia paraensis is apparently most closely related to F. laurifolia but can be separated by its larger and more heavily veined leaves, longer and more floriferous inflorescences, and pubescent ovaries. Forsteronia prancei is morphologically similar to F. manausana, from which it is distinguished by the larger and more coriaceous leaves, denser and more hemispheric inflorescence, and larger flowers.
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Literature cited
Endress, M. & B. F. Hansen. 2007. Pinochia, a new genus of Apocynaceae, Apocynoideae from the Greater Antilles, Mexico and Central America. Edinburgh Journal of Botany 64: 269–274.
Endress, M. & B. F. Hansen. 2016. Proposals to conserve the names Forsteronia and Pinochia (Apocynaceae), the former with a conserved type. Taxon 65: 189.
Endress, M.E., S. Liede-Schumann & U. Meve. 2014. An updated classification for Apocynaceae. Phytotaxa 159: 175–194.
Endress, M.E., U. Meve, D. J. Middleton & S. Liede-Schumann. 2019. Apocynaceae. Pp. 207–411. In: J. W. Kadereit & V. Bittrich (eds.). Flowering plants. Eudicots, The families and genera of vascular plants, vol. 15.
Flora do Brasil 2020 em construção. 2019. Jardim Botânico do Rio de Janeiro. Available from: http://floradobrasil.jbrj.gov.br/ (accessed 1 July 2019)
Hansen, B. F. 1985. A monographic revision of Forsteronia (Apocynaceae). PhD thesis, University of South Florida, Tampa.
Hansen, B. F. & J. F. Morales. 2009. Typifications in the genera Forsteronia and Laxoplumeria (Apocynaceae). Darwiniana 47: 227–228.
Livshultz, T., D. J. Middleton, M. E. Endress & J. K. Williams. 2007. Phylogeny of Apocynoideae and the APSA clade (Apocynaceae s.l.). Annals of the Missouri Botanical Garden 94: 324–359.
Morales, J. F. 1995. A new species of Forsteronia (Apocynaceae) from Costa Rica. Phytologia 78: 195–196.
Simões, A. O., M. E. Endress, T. van der Niet, E. Conti & L. S. Kinoshita, 2004. Tribal and intergeneric relationships of Mesechiteae (Apocynoideae, Apocynaceae): evidence from three noncoding plastid DNA regions and morphology. American Journal of Botany 91: 1409–1418.
Simões, A. O., M. E. Endress, T. van der Niet, E. Conti & L. S. Kinoshita. 2006. Is Mandevilla (Apocynaceae, Mesechiteae) monophyletic? Evidence from five plastid DNA loci and morphology. Annals of the Missouri Botanical Garden 93: 565–591.
Turland, N. J., J. H. Wiersema, F. R. Barrie, W. Greuter, D. L. Hawksworth, P. S. Herendeen, S. Knapp, W. H. Kusber, D. Z. Li, K. Marhold, T. W. May, J. McNeill, A. M. Monro, J. Prado, M. J. Price & G. F. Smith (eds.) 2018. International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten. doi: https://doi.org/10.12705/Code.2018
Woodson, R.E. 1935. Studies in the Apocynaceae. IV. The American genera of Echitoideae. Annals of the Missouri Botanical Garden 22: 153–306.
Acknowledgments
We thank the curators of the following herbaria for allowing the study of their collections: A, B, BM, CEPEC, CGE, CR, F, G, GH, HAL, INPA, JAR, K, MBML, MO, NY, P, RB, S, SPF, U, UC, UNIP, US, USF, W, WAG. The second author thanks the University of Bayreuth (Germany), the Deutscher Akademischer Austauschdienst (Germany) (PKZ, A/12/97412), and the Missouri Botanical Garden (United States) for providing financial support. We thank the staff of the National Herbarium of Costa Rica (CR) for allowing us to use their facilities and Mary Endress (Z) and Sigrid Liede-Schumann (UBT) for their helpful reviews. This study forms part of the doctoral dissertation of the second author, which was never published.
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Hansen, B.F., Morales, J.F. New species and a new lectotypifications in Forsteronia (Apocynaceae, Mesechiteae). Brittonia 71, 435–444 (2019). https://doi.org/10.1007/s12228-019-09594-9
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DOI: https://doi.org/10.1007/s12228-019-09594-9