Abstract
A new species is described from the Huancabamba Pass, a relict montane forest in northwest Peru, near the southwestern border of Ecuador. Pachycaulos huancabambae J.L.Clark & Moonlight is a terrestrial or lithophytic herb with scandent stems that grows in dense mats of bryophytes. This is the second species of Pachycaulos and renders that taxon as non-monotypic. We discuss several other genera of Gesneriaceae that are also no longer monotypic because of recent exploratory research in tropical forests and increased taxon sampling from ongoing phylogenetic studies. A molecular phylogenetic analysis based on nrDNA ITS is presented that strongly supports the monophyly and sister-group relationship of P. huancabambae and P. nummularia . Based on IUCN guidelines, a preliminary conservation status is assigned as Critically Endangered (CR).
Original language | American English |
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Pages (from-to) | 410-418 |
Number of pages | 9 |
Journal | Systematic Botany |
Volume | 48 |
Issue number | 3 |
DOIs | |
State | Published - 1 Jul 2023 |
Keywords
- Andes
- Columneinae
- Gesnerieae
- biodiversity
- taxonomy
EGS Disciplines
- Biology