1. Species Carex ascotreta C.B.Clarke ex Franch.
2. Species Carex cucullata (Kük.) Ohwi
3. Species Carex imbecillis (Ohwi) Katsuy.
4. Species Carex jacens C.B.Clarke
5. Species Carex karashidaniensis Akiyama
6. Species Carex lancifolia C.B.Clarke
7. Species Carex satsumasendaica Okih.Yano, Katsuy. & W.Ohnishi
8. Species Carex shimizui Okih.Yano, Katsuy., W.Ohnishi & T.Hoshino
9. Species Carex trigonosperma Ohwi
10. Species Carex uber Ohwi
11. Species Carex anbouensis Katsuy. accepted as Carex morrowii var. laxa Ohwi (unaccepted > junior subjective synonym)
12. Species Carex arimaensis (Ohwi) T.Hoshino accepted as Carex alterniflora var. arimaensis Ohwi (unaccepted > junior subjective synonym)
13. Species Carex clivorum Ohwi accepted as Carex pisiformis Boott (unaccepted > junior subjective synonym)
14. Species Carex hypochlora Freyn accepted as Carex sabynensis Less. ex Kunth (unaccepted > junior subjective synonym)
15. Species Carex polyschoena H.Lév. & Vaniot accepted as Carex pisiformis Boott (unaccepted > junior subjective synonym)
16. Species Carex qingliangensis D.M.Weng, H.W.Zhang & S.F.Xu accepted as Carex matsudai (Hayata) Hayata ex Makino & Nemoto (unaccepted > junior subjective synonym)
17. Species Carex qiyunensis S.W.Su & S.M.Xu accepted as Carex breviculmis var. lonchophora (Ohwi) X.F.Jin & Y.F.Lu (unaccepted > junior subjective synonym)
18. Species Carex tokuii J.Oda & Nagam. accepted as Carex rugata Ohwi (unaccepted > junior subjective synonym)
19. Species Carex tsushimensis (Ohwi) Ohwi accepted as Carex chinensis var. tsushimensis Ohwi (unaccepted > junior subjective synonym)

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