, Volume 70, Issue 3, pp 369–376 | Cite as

Chromosome counts in Chaetogastra (Melastomataceae, Melastomateae)

  • Fabrício Schmitz MeyerEmail author
  • Klenya Rocha Braga
  • Eliana R. Forni-Martins
  • Renato Goldenberg


Chaetogastra is the largest genus in Melastomateae, with about 165–190 species. The genus was only recently resurrected, based on species that have been traditionally treated in Tibouchina sects. Diotanthera, Pseudopterolepis, Purpurella and Simplicicaules. This article presents 15 chromosome counts for the genus, a review of the available counts and also a discussion of these counts in a systematic context. Although the sampling in the genus is still poor, the data found in the literature and in our research indicate x=9 as the base chromosome number for the genus. We also found that euploidy may be common in Chaetogastra, with diploid, tetraploid and hexaploid species. Basic chromosome numbers also seem to be a taxonomic character that distinguishes Chaetogastra (x=9) from Brachyotum (x=10).


Brachyotum cytogenetics Tibouchina 



We thank Sandra Maria Carmello Guerreiro for the permission to use the Optic Microscope in the Laboratory of Plant Anatomy at Universidade Estadual de Campinas, Frank Almeda for the assistance with bibliography on chromosome counts of Melastomataceae, and two anonymous reviewers for the suggestions on a previous version of this work.

Literature cited

  1. Almeda, F. 1977. Systematics of the neotropical genus Centradenia (Melastomataceae). Journal of the Arnold Arboretum. 58: 73–108.CrossRefGoogle Scholar
  2. ———. 1978. Systematics of the genus Monochaetum (Melastomataceae) in Mexico and Central America. University of California Publications in Botany. 75: 1–134.Google Scholar
  3. ———. 1997. Chromosome numbers and their evolutionary significance in some neotropical and paleotropical Melastomataceae. BioLlania Edición Especial 6: 167–190.Google Scholar
  4. ———. 2009. Melastomataceae. In: G. Davidse, M. Sousa-Sánchez, S. Knapp & F. Chiang (eds.), Flora Mesoamericana, vol. 4: 164–338. Universidad Nacional Autónoma de México, México City.Google Scholar
  5. ———. 2013. Systematic and phylogenetic significance of chromosome number diversity in some Neotropical Melastomataceae. Memoirs of the New York Botanical Garden 108: 155–177.Google Scholar
  6. ——— & T. I. Chuang. 1992. Chromosome numbers and their systematic significance in some Mexican Melastomataceae. Systematic Botany17: 583–593.Google Scholar
  7. Alvear, D. M. 2010. Systematics of the genus Monochaetum (Melastomataceae) in Colombia. M.Sc. thesis, San Francisco State University, San Francisco.Google Scholar
  8. Andrada, A. R. & V. A. Páez. 2014. Estudios meióticos y viabilidad del pólen de tres especies de Tibouchina (Melastomataceae). Lilloa 51: 131–140.Google Scholar
  9. Caetano, A. P. S., S. P. Teixeira, E. L. Forni-Martins & S.M. Carmello-Guerreiro. 2013. Pollen insights into apomictic and sexual Miconia (Miconieae, Melastomataceae). International Journal of Plant Sciences 174: 760–768CrossRefGoogle Scholar
  10. Cave, M. S. 1964. Index to plant chromosome number for 1963. California Botanical Society, BerkeleyGoogle Scholar
  11. Cogniaux, A. C. 1885. Tibouchina. In: C. F. P. Martius & A. G. Eichler (eds.). Flora Brasiliensis 14(3): 288–418. Typographia Regia, Monachii.Google Scholar
  12. ———. 1891. Tibouchina. In: A. Candolle & C. Candolle (eds.). Monographiae Phanerogamarum 7: 197–278. G. Masson, Paris.Google Scholar
  13. CRIA – Centro de Referência em Informação Ambiental. 2016. Species link. (Accessed 27 November 2016).
  14. Darlington, C. D. & A. P. Wylie. 1955. Chromosome atlas of flowering plants. Allen & Unwin, London.Google Scholar
  15. Fedorov, A. 1974. Chromosome numbers of flowering plants – reprint of first edition. Otto Koeltz Science Publishers, Koenigstein.Google Scholar
  16. Gadella, T. W. J., E. Kliphuis, J. C. Lindeman & E. A. Mennega. 1969. Chromosome number and seedling morphology of some Angiospermae collected in Brazil. Acta Botanica Neerlandica 18: 74–83.CrossRefGoogle Scholar
  17. Gill, B. S., S. S. Bir & V. K. Singhal. 1979. In IOPB chromosome number reports LXV. Taxon 28: 630.Google Scholar
  18. Glick, L. & I. Mayrose. 2014. ChromEvol: assessing the pattern of chromosome number evolution and the inference of polyploidy along a phylogeny. Molecular Biology and Evolution 31: 1914–1922.CrossRefPubMedGoogle Scholar
  19. Goldenberg, R. & G. J. Shepherd. 1998. Studies on the reproductive biology of Melastomataceae in “cerrado” vegetation. Plant Systematics and Evolution 211: 13–29.CrossRefGoogle Scholar
  20. ——— & I. G. Varassin. 2001. Sistemas reprodutivos de espécies de Melastomataceae da Serra do Japi, Jundiaí, São Paulo, Brasil. Revista Brasileira de Botânica 24: 283–288.Google Scholar
  21. Goldblatt, P. 1984. Index to plant chromosome numbers, 1996–1997. Monographs in Systematic Botany from the Missouri Botanical Garden 8: 1–427.Google Scholar
  22. ——— & D. E. Johnson. 1979–2016. Index to plant chromosome numbers. Missouri Botanical Garden, St. Louis. (Accessed 27 November 2016).
  23. Gómez, J. R. S. 2004. Una nueva especie de Tibouchina (Melastomataceae) de Guerrero, Mexico. Novon 14: 163–167.Google Scholar
  24. ———. 2012. Tibouchina xochiatencana (Melastomataceae), una nueva espécie de la Sierra Madre del Sur de Guerrero, Mexico. Brittonia 64: 277–281.CrossRefGoogle Scholar
  25. Grimm, D. & F. Almeda. 2013. Systematics, phylogeny, and biogeography of Chaetolepis (Melastomataceae). Journal of the Botanical Research Institute of Texas 7: 218–263.Google Scholar
  26. Guerra, M. 1983. O uso de Giemsa em citogenética vegetal: comparação entre a coloração simples e o bandeamento. Ciencia e Cultura 37: 190–193.Google Scholar
  27. ———. 2002. Como observar cromossomos: um guia de técnicas. Fundação de Pesquisas Científicas de Ribeirão Preto, Ribeirão Preto.Google Scholar
  28. ———. 2008. Chromosome numbers in plant cytotaxonomy: Concepts and implications. Cytogenetic and Genome Research. 120: 339–350.CrossRefPubMedGoogle Scholar
  29. Guimarães, P. J. F. 2014. Two new species of Tibouchina (Melastomataceae) from Brazil. Novon 23: 42–46.CrossRefGoogle Scholar
  30. ——— & C. M. S. Oliveira. 2009. Tibouchina. In: M. G. L. Wanderley, G. J. Shepherd, T. S. Melhem & A. M. Giulietti (eds.). Flora fanerogâmica do estado de São Paulo, vol. 6: 127–149. Fapesp, São Paulo.Google Scholar
  31. ——— & E. Woodgyer. 2016. A new and unusual amphistomatic species of Tibouchina (Melastomeae, Melastomataceae) from Brazil. Phytotaxa 246: 145–151.Google Scholar
  32. Hunziker, J. H., C. C. Xifreda & A. F. Wulff. 1985. Estudios cromosómicos em angiospermas de Sudamérica. Darwiniana 26: 7–14.Google Scholar
  33. Idárraga, A. & F. A. Michelangeli. 2011. Melastomataceae. In: A. I. Piedahíta, R. C. Ortiz, R. C. Posada & M. Merello (eds.). Flora de Antioquia, Catálogo de las plantas vasculares, vol. 2: 600–626. D’Vinni, Bogotá.Google Scholar
  34. Kobayashi, S. & M. Ono. 1984. A note on Melastoma in the Boni and Volcano Islands. Journal of Japanese Botany 59: 65–70Google Scholar
  35. Mayrose, I., M. S. Barker & S. P. Otto. 2010. Probabilistic models of chromosome number evolution and the inference of polyploidy. Systematic Biology 59: 132–144.CrossRefPubMedGoogle Scholar
  36. Meenakumari, R. & P. Kuriachan. 1990. SOCGI plant chromosome number reports – X. The Journal of cytology and genetics 25: 321–322.Google Scholar
  37. Meyer, F. S. 2016. Estudos Sistemáticos no clado de Chaetogastra DC. e gêneros aliados (Melastomataceae: Melastomeae). PhD thesis, Universidade Estadual de Campinas, Campinas. Avaliable at: (Accessed 10 November 2016).
  38. ———, P. J. F. Guimarães & R. Goldenberg. 2010. Tibouchina (Melastomataceae) do estado do Paraná. Rodriguésia 61: 615–638.Google Scholar
  39. ——— & R. Goldenberg. 2016. Four new species of Chaetogastra from Southern Brazil. Phytotaxa 282: 239–258.Google Scholar
  40. ———, R. Goldenberg & L. J. C. Kollmann. 2016. Three new species of Pleroma (Melastomataceae) from Inselbergs of Espírito Santo, Brazil. Phytotaxa 282: 197–210.Google Scholar
  41. Michelangeli, F. A., P. J. F. Guimarães, D. S. Penneys, F. Almeda & R. Kriebel. 2013. Phylogenetic relationships and distribution of New World Melastomeae (Melastomataceae). Botanical Journal of the Linnean Society 171: 38–60.CrossRefGoogle Scholar
  42. Peralta, P. 2002. Las especies del género Tibouchina (Melastomataceae) en Argentina. Darwiniana 40: 107–120.Google Scholar
  43. Renner, S. S. 1999. Melastomataceae. In: P. M. Jørgensen & S. León-Yánez (eds.). Catálogo de las plantas vasculares del Ecuador. Monographs in Systematic Botany from the Missouri Botanical Garden 75: 561–585.Google Scholar
  44. ———. 2014. Melastomataceae. In: P. M. Jørgensen, M. H. Nee & S. G. Beck (eds.). Catálogo de las plantas vasculares de Bolivia. Monographs in Systematic Botany from the Missouri Botanical Garden 127: 826–848.Google Scholar
  45. Rice, A., L. Glick, S. Abadi, M. Einhorn, N. M. Kopelman, A. Salman-Minkov, J. Mayzel, O. Chay & I. Mairose. 2014. The Chromosome Counts Database (CCDB) - a community resource of plant chromosome numbers. New Phytologist 206: 19–26.CrossRefPubMedGoogle Scholar
  46. Rocha, M. J. R., J. A. N. Batista., P. J. F. Guimarães & F. A. Michelangeli. 2016. Phylogenetic relationships in the Marcetia alliance (Melastomeae, Melastomataceae) and implications for generic circumscription. Botanical Journal of Linnean Society 181:585–609.CrossRefGoogle Scholar
  47. Schneider, C. A., W. S. Rasband & K. W. Eliceiri. 2012. NIH Image do ImageJ: 25 yeras of image analysis. Nature Methods 9: 671–675.CrossRefPubMedPubMedCentralGoogle Scholar
  48. Solt, M. L. & J. J. Wurdack. 1980. Chromosome numbers in the Melastomataceae. Phytologia 47: 199–220.Google Scholar
  49. Souza, M. L. D. R. 1986. Estudo taxonômico do gênero Tibouchina Aubl. (Melastomataceae) no Rio Grande do Sul, Brasil. Insula 16: 3–108.Google Scholar
  50. Thiers, B. 2017 - continuously updated. Index Herbariorum: A global directory of public herbaria and associated staff. (Accessed 27 June 2017).
  51. Todzia, C. A. & F. Almeda. 1991. A revision of Tibouchina section Lepidotae (Melastomataceae: Tibouchinae). Proceedings of the California Academy of Sciences 47: 175–206.Google Scholar
  52. ———. 1999. Ten new species of Tibouchina (Melastomataceae) from Mexico. Brittonia 51: 255–279.CrossRefGoogle Scholar
  53. Wurdack, J. J. 1953. A revision of the genus Brachyotum (Tibouchineae-Melastomataceae). Memoirs of the New York Botanical Garden 8: 343–407.Google Scholar
  54. ———. 1962. Melastomataceae of Santa Catarina. Sellowia 14: 109–217.Google Scholar
  55. ———. 1980. Melastomataceae. In: G. Harling, B. B. Sparre & L. Andersson (eds.). Flora of Ecuador, vol. 13: 1–405. University of Göteborg and Swedish Museum of Natural History, Göteborg and Stockholm.Google Scholar

Copyright information

© The New York Botanical Garden 2018

Authors and Affiliations

  • Fabrício Schmitz Meyer
    • 1
    Email author
  • Klenya Rocha Braga
    • 1
  • Eliana R. Forni-Martins
    • 2
  • Renato Goldenberg
    • 3
  1. 1.Programa de Pós-Graduação em Biologia VegetalUniversidade Estadual de CampinasSão PauloBrazil
  2. 2.Departamento de Biologia VegetalUniversidade Estadual de CampinasSão PauloBrazil
  3. 3.Departamento de BotânicaUniversidade Federal do ParanáParanáBrazil

Personalised recommendations