TY - JOUR
T1 - phylogeny and taxonomy of carex (Cyperaceae) in Japan I. C. sect. rarae
AU - Oda, Jiro
AU - Fuse, Shizuka
AU - Yamashita, Jun
AU - Tamura, Minoru N.
N1 - Funding Information:
We express our sincere gratitude to Prof. Hidetoshi Na-gamasu for assistance with the micromorphological observations and nomenclatural discussion. We extend our warm thanks to Mr. Teruo Katsuyama for discussing Carex sect. Rarae with the first author (J. Oda). We are indebted to Dr. Wataru Shinohara, Dr. Yukie Kato, Dr. No-buyuki Numakunai, Mr. Tatsunari Noguchi, Mr. Yoshi-taka Hayashi, Mr. Kazuya Yamawaki, Mr. Kiyoharu Ush-ijima, Ms. Tomiko Ushijima, and Ms. Tazuko Watanabe for providing us with plant materials. We are grateful to Dr. Koji Yonekura, Dr. Tomoko Fukuda, Dr. Atsuko Takano, Dr. Nobuko Yamamoto, and Mr. Hiroshi Noda for the valuable information from the literature, specimens, and DNA experiments. Our thanks are due to Dr. Hiroshi Tobe for the critical reading of the manuscript. Thanks are also given to the directors and staff members of the herbaria P, KPM, and KYO. This study was supported in part by JSPS KAKENHI (Grants-in-Aid for Scientific Research) Grant Number JP25440207 (to M. N. Tamura).
Publisher Copyright:
© 2019, Japanese Society for Plant Systematics. All rights reserved.
PY - 2019
Y1 - 2019
N2 - To understand the relationships among species of Carex sect. Rarae in Japan, we conducted molecular phylogenetic analyses based on a combined dataset of DNA sequences of plastid (atpB–rbcL, rpl16– rpl16–rps3, rps16, trnT–trnL, trnL–trnL–trnF) and nuclear (ITS) regions. All species and varieties of C. sect. Rarae in Japan were included. The resulting phylogenetic tree consisted of two major clades: Clade I with distinctly veined perigynia, and Clade II with indistinctly veined perigynia. Clade I further consisted of two subclades A and B. Subclade A comprised C. biwensis and C. capillacea, while subclade B included the Japanese endemics C. fulta, C. koyaensis, C. noguchii, and C. ruralis. Clade II comprised C. hakonensis, C. onoei, C. semihyalofructa, and C. uda. Clade II and subclade A corresponded to Carex subsect. Capitellatae (excluding C. fulta) and Carex subsect. Rarae circumscribed by Egorova, respectively. We propose a new subsection, Fultae, for subclade B, which is characterized by distinctly veined perigynia that lack rusty dots. We suggest that Carex koyaensis var. yakushimensis be treated as C. yakushimensis. Carex inagawaensis is described as a new species from Hyogo Prefecture. A diagnostic key to subsections and species of Carex sect. Rarae in Japan is presented.
AB - To understand the relationships among species of Carex sect. Rarae in Japan, we conducted molecular phylogenetic analyses based on a combined dataset of DNA sequences of plastid (atpB–rbcL, rpl16– rpl16–rps3, rps16, trnT–trnL, trnL–trnL–trnF) and nuclear (ITS) regions. All species and varieties of C. sect. Rarae in Japan were included. The resulting phylogenetic tree consisted of two major clades: Clade I with distinctly veined perigynia, and Clade II with indistinctly veined perigynia. Clade I further consisted of two subclades A and B. Subclade A comprised C. biwensis and C. capillacea, while subclade B included the Japanese endemics C. fulta, C. koyaensis, C. noguchii, and C. ruralis. Clade II comprised C. hakonensis, C. onoei, C. semihyalofructa, and C. uda. Clade II and subclade A corresponded to Carex subsect. Capitellatae (excluding C. fulta) and Carex subsect. Rarae circumscribed by Egorova, respectively. We propose a new subsection, Fultae, for subclade B, which is characterized by distinctly veined perigynia that lack rusty dots. We suggest that Carex koyaensis var. yakushimensis be treated as C. yakushimensis. Carex inagawaensis is described as a new species from Hyogo Prefecture. A diagnostic key to subsections and species of Carex sect. Rarae in Japan is presented.
KW - Achene micromorphology
KW - Carex
KW - Carex inagawaensis
KW - Carex sect. Rarae
KW - Carex subsect. Fultae
KW - Carex yakushimensis
KW - ITS
KW - Phylogeny
KW - Plastid DNA
KW - Taxonomy
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UR - http://www.scopus.com/inward/citedby.url?scp=85071270608&partnerID=8YFLogxK
U2 - 10.18942/apg.201821
DO - 10.18942/apg.201821
M3 - Article
AN - SCOPUS:85071270608
SN - 1346-7565
VL - 70
SP - 69
EP - 85
JO - Acta Phytotaxonomica et Geobotanica
JF - Acta Phytotaxonomica et Geobotanica
IS - 2
ER -