Alpha-taxonomy underestimates the diversity in Jacquemontia (Convolvulaceae): a new hypothesis for Jacquemontia evolvuloides complex based on morphological, anatomical, and morphometric analyses

Interpreting plant morphological variability makes species delimitation a challenge. Jacquemontia evolvuloides and its relatives have been the target of different taxonomic classifications, either as multiple species and subspecies/varieties or as a single polymorphic species. Here we applied univar...

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Bibliographic Details
Published in:Plant biosystems 2024-07, Vol.158 (4), p.613-631
Main Authors: Belo, Deibson Pereira, Louzada, Rafael Batista, Buril, Maria Teresa
Format: Article
Language:English
Subjects:
Brazilian flora
Genetic variability
Geographical distribution
Jacquemontia
multivariate analyses
neotropics
New species
nomenclature
species boundaries
species complex
Taxonomy
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Summary:Interpreting plant morphological variability makes species delimitation a challenge. Jacquemontia evolvuloides and its relatives have been the target of different taxonomic classifications, either as multiple species and subspecies/varieties or as a single polymorphic species. Here we applied univariate and multivariate morphometric analyses, using both macro- and micromorphological characters of 22 populations comprising this species complex. Our analysis revealed six morphotypes with clear discontinuities in both macro- and micromorphological characters. One morphotype corresponds to J. evolvuloides, two correspond to previously named species, putted under a synonym, here re-established (J. agrestis and J. decumbens) and three morphotypes correspond to new species, described here. We present a complete taxonomic treatment of J. evolvuloides and related species, with descriptions, distribution maps, photographs, and illustrations, that indicate new synonyms.
ISSN:1126-3504
1724-5575
DOI:10.1080/11263504.2024.2347853