Abstract
Papenfussia japonica (Yoshida et Mikami) M.J. Wynne, currently recognized as a Japanese endemic species, is characterized by a polystromatic thallus, a transversely dividing apical meristematic cell, intercalary cell division in primary and higher-order cell rows, and a Papenfussia-type procarp comprising a four-celled carpogonial branch, a supporting cell, and a single-celled sterile cell group with no cover cell group. We collected specimens from the southern coast of Jeju Island, Korea, that matched the original description in all respects other than female reproductive structures: Korean plants had Nitophyllum-type procarps with a cover cell group. The developmental pattern of female reproductive structures and the rbcL gene data indicate that P. japonica has a close relationship with the recently described genus Augophyllum Lin, Fredericq et Hommersand even though the apical organization of P. japonica differs from that of Augophyllum. We here transfer P. japonica to the genus Augophyllum.
About the authors
Jeong Chan Kang is a postdoctoral researcher at the Department of Biology, Jeju National University, Korea. He is specialized in the family Delesseriaceae on the basis of the relationship between molecular phylogeny and anatomical morphology.
Myung Sook Kim is a Professor of Biology at Jeju National University, Jeju, Korea. She was awarded a PhD in Algal Systematics by Seoul National University, Korea for her work on the taxonomic revision of Polysiphonia and has studied the systematics of Rhodophyta for over 20 years, especially in the family Rhodomelaceae. More recent research has concentrated on establishing a DNA barcode database for Korean seaweeds to identify species and genus correctly.
Acknowledgments
We thank Dr. K. Kogame of Hokkaido University for assisting with the observations on the type specimens in SAP, and Dr. S.-M. Lin of National Taiwan Ocean University for kind advice on our manuscript. This work was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIBR no. 2014-0655).
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