1. Species Trasus ampullaceus Gray accepted as Carex rostrata Stokes
2. Species Trasus atratus (L.) Gray accepted as Carex atrata L.
3. Species Trasus binervis (Sm.) Gray accepted as Carex binervis Sm.
4. Species Trasus capillaris (L.) Gray accepted as Carex capillaris L.
5. Species Trasus chlorostachyos Gray accepted as Carex pseudocyperus L.
6. Species Trasus clandestinus (Gooden.) Gray accepted as Carex humilis var. humilis Leyss.
7. Species Trasus depauperatus (Curtis ex Woodw.) Gray accepted as Carex depauperata Curtis ex Woodw.
8. Species Trasus digitatus (L.) Gray accepted as Carex digitata L.
9. Species Trasus distans (L.) Gray accepted as Carex distans L.
10. Species Trasus erectus (DC.) Gray accepted as Carex sempervirens Vill.
11. Species Trasus extensus (Gooden.) Gray accepted as Carex extensa Gooden.
12. Species Trasus filiformis (L.) Gray accepted as Carex montana L.
13. Species Trasus flavus (L.) Gray accepted as Carex flava L.
14. Species Trasus fulvus Gray accepted as Carex hostiana DC.
15. Species Trasus glaucus (Scop.) Gray accepted as Carex flacca subsp. flacca Schreb.
16. Species Trasus hirtus (L.) Gray accepted as Carex hirta L.
17. Species Trasus hostianus (DC.) Gray accepted as Carex hostiana DC.
18. Species Trasus laevigatus (Sm.) Gray accepted as Carex laevigata Sm.
19. Species Trasus limosus (L.) Gray accepted as Carex limosa L.
20. Species Trasus oederi (Retz.) Gray accepted as Carex oederi Retz.
21. Species Trasus pallescens (L.) Gray accepted as Carex pallescens L.
22. Species Trasus paludosus (Gooden.) Gray accepted as Carex acutiformis Ehrh.
23. Species Trasus paniceus (L.) Gray accepted as Carex panicea L.
24. Species Trasus pauciflorus (Lightf.) Gray accepted as Carex pauciflora Lightf.
25. Species Trasus pendulus (Huds.) Gray accepted as Carex pendula Huds.
26. Species Trasus piluliferus (L.) Gray accepted as Carex pilulifera L.
27. Species Trasus praecox (Schreb.) Gray accepted as Carex praecox Schreb.
28. Species Trasus rariflorus (Wahlenb.) Gray accepted as Carex rariflora (Wahlenb.) Sm.
29. Species Trasus riparius (Curtis) Gray accepted as Carex riparia Curtis
30. Species Trasus strigosus (Huds.) Gray accepted as Carex strigosa Huds.
31. Species Trasus sylvaticus (Huds.) Gray accepted as Carex sylvatica Huds.
32. Species Trasus tomentosus (L.) Gray accepted as Carex tomentosa L.
33. Species Trasus ustulatus Gray accepted as Carex atrofusca Schkuhr
34. Species Trasus vesicarius (L.) Gray accepted as Carex vesicaria L.

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