Taxonomic revision of Delphinium (Ranunculaceae) in the South-East of European Russia

Morphological and phylogenetic (nrITS barcode) analyses are conducted to clarify the taxonomic status of 10 Delphinium species ( D. cuneatum, D. dictyocarpum, D. duhmbergii , D. elatum, D. litwinowii , D. pubiflorum , D. puniceum, D. sergii , D. subcuneatum, D. uralense ) occurring in the South-East...

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Bibliographic Details
Published in:Plant systematics and evolution 2021-10, Vol.307 (5), Article 59
Main Authors: Kashin, Alexander S., Kritskaya, Tatyana A., Bogoslov, Artem V., Shilova, Irina V., Parkhomenko, Alena S., Ishmuratova, Maya M., Fedorov, Nikolai I.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Climatic conditions
Delphinium
Delphinium elatum
Dendrocerus sergii
Diphascon puniceum
Life Sciences
Morphology
Morphometry
Original Article
Parameters
Phylogenetics
Phylogeny
Plant Anatomy/Development
Plant Ecology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Qualitative analysis
Species
Taxonomic revision
Taxonomy
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Summary:Morphological and phylogenetic (nrITS barcode) analyses are conducted to clarify the taxonomic status of 10 Delphinium species ( D. cuneatum, D. dictyocarpum, D. duhmbergii , D. elatum, D. litwinowii , D. pubiflorum , D. puniceum, D. sergii , D. subcuneatum, D. uralense ) occurring in the South-East of European Russia. The morphometric analysis is carried out with 22 quantitative and 32 qualitative parameters. Based on all parameters, the nMDS supports the differentiation of D. puniceum , D. sergii , D. uralense and D. pubiflorum whereas other studied taxa remain undistinguished. Furthermore, the Random forest analysis and the MrBayes phylogenetic analysis of ITS sequences confirm the species status of D. puniceum belonging to D. sect. Diedropetala and D. elatum , D. uralense , D. dictyocarpum and D. pubiflorum belonging to D. sect. Delphinastrum . Finally, recursive partitioning is performed to develop the dichotomous key which can be used to identify the species of Delphinium in the study area. In conclusion, we stress that the recognition of species belonging to D. sect. Delphinastrum is hindered by the presence of numerous intermediate or hybrid forms, on the one hand, and the impact of climatic conditions on the morphological (and, specifically, taxonomically significant) traits, on the other hand.
ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-021-01783-y