A New and Expanded Phylogenetic Analysis of Hyptidinae (Ocimeae-Lamiaceae).
Barêa Pastore, José Floriano
Medeiros Antar, Guilherme
de Souza Soares, Arthur
Harley, Raymond Mervyn
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Hyptidinae, ca. 400 species, is an important component of Neotropical vegetation formations. Members of the subtribe possess flowers arranged in variously modified bracteolate cymes and nutlets with an expanded areole and all share a unique explosive mechanism of pollen release, except for . In a recent phylogenetic study, the group had its generic delimitations rearranged with the recognition of 19 genera in the subtribe. Although the previous phylogenetic analysis covered almost all the higher taxa in the subtribe, it lacked a broader sampling at the species level. Here we present a new expanded phylogenetic analysis for the subtribe comprising 153 accessions of Hyptidinae sequenced for the nuclear nrITS, nrETS, and waxy regions and the plastid markers and . Our results widely support the previous phylogenetic results with some changes in the support and relationship between genera. It also uncovers the need for a new combination of in and the phylogenetic position of sect. , which was demonstrated to be part of . The generic delimitation in Hyptidinae is discussed, and we recommend that further studies with more markers are needed to confirm the monophyly of and , as well as to support taxonomic changes on the infrageneric delimitation within s. s.