The Argyreia collinsiae species complex (Convolvulaceae): phenetic analysis and geographic distribution reveal subspecies new to science
Issued Date
2024-01-01
Resource Type
eISSN
21678359
Scopus ID
2-s2.0-85208257611
Journal Title
PeerJ
Volume
12
Issue
10
Rights Holder(s)
SCOPUS
Bibliographic Citation
PeerJ Vol.12 No.10 (2024)
Suggested Citation
Srisombat P., Chitchak N., Rattanakrajang P., Stewart A.B., Traiperm P. The Argyreia collinsiae species complex (Convolvulaceae): phenetic analysis and geographic distribution reveal subspecies new to science. PeerJ Vol.12 No.10 (2024). doi:10.7717/peerj.18294 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/102006
Title
The Argyreia collinsiae species complex (Convolvulaceae): phenetic analysis and geographic distribution reveal subspecies new to science
Author's Affiliation
Corresponding Author(s)
Other Contributor(s)
Abstract
Argyreia Lour. is a speciose genus in the Convolvulaceae. However, the genus contains several problematic species complexes due to their morphological similarity. In this study, we aimed to resolve the Argyreia collinsiae complex, which consists of four similar operational taxonomic units (OTUs), i.e., A. collinsiae (Craib) Na Songkhla & Traiperm, A. dokmaihom Traiperm & Staples, A. versicolor (Kerr) Staples & Traiperm, and a peculiar OTU typically known as the large-bract morphotype of A. collinsiae. Following morphological comparison and phenetic analysis, all four OTUs were found to be distinct. However, the large-bract morphotype of A. collinsiae was confirmed to be more closely related to the original morphotype of A. collinsiae than to the other two species. Species distribution modeling (SDM) was then conducted for both morphotypes of A. collinsiae, revealing different geographical ranges of suitable habitat for each. In conclusion, the large-bract morphotype of A. collinsiae was described in this study as a new subspecies, A. collinsiae subsp. megabracteata Traiperm&Srisombat, subsp. nov., based on morphological differences and separate geographic range.Wealso provide here an identification key, description, detailed illustrations, distribution data, and ecological notes of the new subspecies. An updated description of A. versicolor and an assessment of its conservation status were also prepared since the original description was based solely on dried herbarium specimens and lacks key details.