| Abstrakt: |
The hypothesis that Dysoxylum(Meliaceae), as currently circumscribed, is polyphyletic is tested. Analyses based on nuclear ribosomal ITS, ETS, the plastid trnL‐trnFintron and intergenic spacer, as well as the rps15‐ycf1intergenic spacer support this hypothesis. Six strongly supported clades within Dysoxylums.l. were recovered, in large part supporting the classification of Harms. Based on the largest molecular phylogenetic tree hitherto assembled, and morphological considerations, a revised disposition of 94 currently recognized Dysoxylumspecies, is presented, reinstating the genera Didymocheton, Epicharis, Goniocheton, Prasoxylonand Pseudocarapa. The first valid publication of the generic name Dysoxylumis identified, and it is typified with D. macrocarpum. Forty‐three new combinations at species level and two at infraspecific are proposed; Didymocheton nutans, Dysoxylum alatum, D. pachyphyllum, Epicharis, Trichilia spectabilisand T. alliacea(second step) are lectotypified. |
Plný text