A novel phylogenetic infrageneric classification of Baccharis (Asteraceae: Astereae), a highly diversified American genus

Autor(es)

Heiden, Gustavo ^{[1, 2, 3]} ; Antonelli, Alexandre ^{[4, 5, 3]} ; Pirani, Jose Rubens ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Bot, Rua Matao 277, BR-05508090 Sao Paulo, SP - Brazil

^[2] Embrapa Clima Temperado, Rodovia BR 392, Km 78, Caixa Postal 403, BR-96010971 Pelotas, RS - Brazil

^[3] Univ Gothenburg, Dept Biol & Environm Sci, Carl Skottsbergs Gata 22B, S-41319 Gothenburg - Sweden

^[4] Royal Bot Gardens, Richmond TW9 3AE, Surrey - England

^[5] Gothenburg Global Biodivers Ctr, Box 461, S-40530 Gothenburg - Sweden

• Tipo de documento: Artigo Científico
• Fonte: Taxon; v. 68, n. 5 NOV 2019.
• Citações Web of Science: 2

Resumo

We present the hitherto most comprehensive phylogenetic hypothesis for Baccharis. Our results confirm that subtribe Baccharidinae is a monogeneric group and support a broad circumscription of Baccharis as monophyletic with the inclusion of all genera that have been previously segregated from it (Baccharidastrum, Baccharidiopsis, Heterothalamulopsis, Heterothalamus, Lanugothamnus). We provide comprehensive lists of accepted and synonymized infrageneric taxa. Seven main lineages are recognized, which we treat as subgenera. Subgenera Baccharis and Molina roughly match previous circumscriptions, while subgenera Pteronioides and Stephananthus are merged with Molina. In total, we propose that Baccharis comprises 440 species classified into 7 subgenera and 47 sections, while 22 sections are considered synonyms. The phylogeny provided constitutes the basis for further exploration of the evolutionary processes that have allowed the group to attain its wide geographic distribution, morphological variation, variable sexual reproductive strategies, and complex chemical contents. (AU)

• Processo FAPESP: 11/18385-0 - Diversificação de gêneros megadiversos na região neotropical: sistemática e evolução de Baccharis L. e Mikania Willd. (Asteraceae)
• Beneficiário: José Rubens Pirani
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/17911-3 - Evolução e biogeografia de Baccharis (Asteraceae): um gênero megadiverso na região neotropical
• Beneficiário: Gustavo Heiden
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 10/00519-8 - Sistemática de Baccharis (Asteraceae: Astereae)
• Beneficiário: Gustavo Heiden
• Modalidade de apoio: Bolsas no Brasil - Doutorado