A taxonomic revision of the ecologically important Ochna holstii (Ochnaceae) complex using molecular and morphological data.
Name
plecevo_article_85589_en_1.pdf
Description
visibility:open
Size
6.69 MB
Format
Adobe PDF
Checksum (CRC64NVME)
hXhRdxU23Jg=
Resource type
Journal article
Date published
May 3, 2023
Abstract
– and its allies represent an ecologically important group in a variety of lowland to montane habitats in tropical eastern and southern Africa. Identifying and delimiting species within this group has proved challenging due to a lack of variation in morphological characters. We combine genomic-scale data of multiple accessions per species with morphological data to generate a taxonomic revision for the complex using a multi-evidence approach.
– A total of 50 samples representing eight species were analysed using target enrichment and a custom bait kit. Phylogenetic analysis was conducted using the multi-species coalescent model and a concatenation maximum likelihood method, and gene tree discordance was investigated. Herbarium specimens of the complex were studied in detail for informative morphological characters, supplemented where possible from field collections, and a full taxonomic revision is provided.
– Within Ochna sect. Schizanthera Clade I, our study confirms that all species are monophyletic and supported by morphological data with the exception of , which is paraphyletic. A new species, , previously confused with , is described, and the placement of another recently described species, , is confirmed for the first time using molecular data.
– The widespread montane tree is non-monophyletic in its current circumscription and likely gave rise to the more range-restricted and We suggest that an integrated taxonomy approach, using both molecular and morphological data, is essential for deciphering difficult species relationships in .
Project(s)
Priority 4: Accelerated Taxonomy
Funder
| Funder name | Awards |
Emily Holmes Memorial Scholarship | |
Natural Environment Research Council, United Kingdom | Doctoral Training ‘Science and Solutions for a Changing Planet’ Program, Imperial College London |
Bentham-Moxon Trust, United Kingdom | |
Journal title
Plant Ecology and Evolution
Volume
156
Issue
2
Publisher
Agentschap Plantentuin Meise
Place of publication
Meise, Belgium
ISSN
2032-3913
eISSN
2032-3921
Date accepted
March 3, 2023
Official URL
Related URL
Rights statement
In Copyright
Additional information
IF = 1.345 (2022-2023)