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ARS Home » Northeast Area » Washington, D.C. » National Arboretum » Floral and Nursery Plants Research » Research » Publications at this Location » Publication #401078

Research Project: Systematics, Nomenclature, and Genetic Diversity of Priority Genera of Woody Landscape Plants

Location: Floral and Nursery Plants Research

Title: Five New Combinations in Passiflora Section Dysosmia (Passifloraceae)

item Svoboda, Harlan

Submitted to: Novon
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/8/2023
Publication Date: 7/25/2023
Citation: Svoboda, H.T. 2023. Five New Combinations in Passiflora Section Dysosmia (Passifloraceae). Novon.

Interpretive Summary: Passionflowers are an important component of many tropical ecosystems, and with over 600 species they represent one of the largest groups of vines. However, despite their abundance scientists still struggle to realize their full diversity due to a lack of taxonomic understanding in the genus. In this study, morphological investigations of a group of closely-related passionflowers revealed distinct entities that are unique enough to warrant recognition based on the Unified Species Concept. By recognizing these remarkable plants now as species, and independent from other taxa, scientists will have a better grasp on passionflower biodiversity and an increased ability to recognize and classify them for future research.

Technical Abstract: Five new taxonomic combinations are described from the Neotropical clade of subgenus Passiflora, supersection Stipulata, section Dysosmia. These taxa, originally described or typically circumscribed as varieties of Passiflora foetida, are now recognized as distinct species on the basis of their unique suites of morphological traits that separate them from the P. foetida species complex. Diagnostic descriptions, geographic distributions, representative specimens, and taxonomic notes are provided for each new species.