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TWO NEW SPECIES OF ANDEAN BEGONIA (BEGONIACEAE)

  • M. C. Tebbitt (a1)
Abstract

Two new species of Begonia (Begoniaceae) from Andean South America are described and illustrated. Begonia heliantha Tebbitt is classified in B. sect. Eupetalum and is known from the Puno Region of Peru and has also been tentatively identified from photographs taken in La Paz Department of Bolivia. Begonia urubambensis Tebbitt is affiliated with a group of species currently classified in B. sect. Knesebeckia. This group of species is informally named here the B. acerifolia group. Begonia sect. Knesebeckia is polyphyletic since the B. acerifolia group does not include the type species of the section. Ongoing research aims to recircumscribe this section. Begonia urubambensis is not assigned to a section given the changes needed to the sectional classification system. Begonia urubambensis is a narrow endemic of La Convención Province (Cusco Region) of Peru. Begonia heliantha is assigned the IUCN category of Data Deficient (DD), while B. urubambensis is assigned the IUCN category of Vulnerable (VU-D2).

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Brako, L. & Zarucchi, J. L. (eds) (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45: i–xl, 1–1286.
Doorenbos, J., Sosef, M. S. M. & De Wilde, J. J. F. E. (1998). The sections of Begonia including descriptions, keys, and species lists. Wageningen Agricultural University Papers 98-2.
IUCN Standards and Petitions Subcommittee (2014). Guidelines for Using the IUCN Red List Categories and Criteria. Version 11. Prepared by the Standards and Petitions Subcommittee. Available at: www.iucnredlist.org/documents/RedListGuidelines.pdf
Moonlight, P. W., Richardson, J. E., Tebbitt, M. C., Thomas, D. C., Hollands, R., Peng, C.-I. & Hughes, M. (2015). Continental-scale diversification patterns in a mega-diverse genus: the biogeography of Neotropical Begonia. J. Biogeogr. 42(6): 11371149.
Tebbitt, M. C. (2011). A new and unusual xerophytic species of Begonia (Begoniaceae) from Peru. Edinburgh J. Bot. 68(2): 16.
Tebbitt, M. C. (2015a). Two new species of Andean tuberous Begonia in the B. octopetala group (Begoniaceae). Novon 23: 479489.
Tebbitt, M. C. (2015b). Two new yellow-flowered tuberous species of Begonia (Begoniaceae) from Bolivia. Brittonia 67(3): 221226.
Tebbitt, M. C., Toapanta, C. E. & Pérez, Á. J. (2015). Taxonomy of Begonia serotina (Begoniaceae) and allied species. Edinburgh J. Bot. 72(3): 343352.
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Edinburgh Journal of Botany
  • ISSN: 0960-4286
  • EISSN: 1474-0036
  • URL: /core/journals/edinburgh-journal-of-botany
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