1. Species Phaeocephalum album (L.) House accepted as Rhynchospora alba (L.) Vahl
2. Species Phaeocephalum axillare (Lam.) House accepted as Rhynchospora glomerata (L.) Vahl
3. Species Phaeocephalum baldwinii (A.Gray) House accepted as Rhynchospora baldwinii A.Gray
4. Species Phaeocephalum brachychaetum House accepted as Rhynchospora brachychaeta C.Wright
5. Species Phaeocephalum caducum (Elliott) House accepted as Rhynchospora caduca Elliott
6. Species Phaeocephalum capillaceum (Torr.) Farw. accepted as Rhynchospora capillacea Torr.
7. Species Phaeocephalum chapmanii (M.A.Curtis) House accepted as Rhynchospora chapmanii M.A.Curtis
8. Species Phaeocephalum ciliare (Michx.) House accepted as Rhynchospora ciliaris (Michx.) C.Mohr
9. Species Phaeocephalum compressum (J.Carey ex Chapm.) House accepted as Rhynchospora compressa J.Carey ex Chapm.
10. Species Phaeocephalum curtissii (Britton) House accepted as Rhynchospora curtissii Britton
11. Species Phaeocephalum cymosum (Willd.) House accepted as Scirpus polyphyllus Vahl
12. Species Phaeocephalum decurrens (Chapm.) House accepted as Rhynchospora decurrens Chapm.
13. Species Phaeocephalum distans (Michx.) House accepted as Rhynchospora fascicularis subsp. fascicularis (Michx.) Vahl
14. Species Phaeocephalum divergens (Chapm. ex M.A.Curtis) House accepted as Rhynchospora divergens Chapm. ex M.A.Curtis
15. Species Phaeocephalum dodecandrum House accepted as Rhynchospora megalocarpa A.Gray
16. Species Phaeocephalum earlei (Britton) House accepted as Rhynchospora harveyi var. harveyi W.Boott
17. Species Phaeocephalum fasciculare (Michx.) House accepted as Rhynchospora fascicularis (Michx.) Vahl
18. Species Phaeocephalum filifolium (A.Gray) House accepted as Rhynchospora filifolia A.Gray
19. Species Phaeocephalum fuscoides House accepted as Rhynchospora filifolia A.Gray
20. Species Phaeocephalum fuscum (L.) House accepted as Rhynchospora fusca (L.) W.T.Aiton
21. Species Phaeocephalum glomeratum (L.) House accepted as Rhynchospora glomerata (L.) Vahl
22. Species Phaeocephalum gracilentum (A.Gray) House accepted as Rhynchospora gracilenta A.Gray
23. Species Phaeocephalum grayi (Kunth) House accepted as Rhynchospora grayi Kunth
24. Species Phaeocephalum inexpansum (Michx.) House accepted as Rhynchospora inexpansa (Michx.) Vahl
25. Species Phaeocephalum intermedium (Chapm.) House accepted as Rhynchospora intermedia (Chapm.) Britton
26. Species Phaeocephalum knieskernii (J.Carey) House accepted as Rhynchospora knieskernii J.Carey
27. Species Phaeocephalum leptorhynchum (C.Wright) House accepted as Rhynchospora leptorhyncha C.Wright
28. Species Phaeocephalum microcarpum (Baldwin ex A.Gray) House accepted as Rhynchospora microcarpa Baldwin ex A.Gray
29. Species Phaeocephalum miliaceum (Lam.) House accepted as Rhynchospora miliacea (Lam.) A.Gray
30. Species Phaeocephalum mixtum (Britton) House accepted as Rhynchospora mixta Britton
31. Species Phaeocephalum pallidum (M.A.Curtis) House accepted as Rhynchospora pallida M.A.Curtis
32. Species Phaeocephalum patulum (A.Gray) House accepted as Rhynchospora caduca Elliott
33. Species Phaeocephalum perplexum (Britton) House accepted as Rhynchospora perplexa Britton
34. Species Phaeocephalum plankii (Britton) House accepted as Rhynchospora harveyi var. harveyi W.Boott
35. Species Phaeocephalum plumosum (Elliott) House accepted as Rhynchospora plumosa Elliott
36. Species Phaeocephalum proliferum (Nees) House accepted as Rhynchospora schomburgkiana (Boeckeler) T.Koyama
37. Species Phaeocephalum punctatum (Elliott) House accepted as Rhynchospora punctata Elliott
38. Species Phaeocephalum pusillum House accepted as Rhynchospora intermixta C.Wright
39. Species Phaeocephalum rariflorum (Michx.) House accepted as Rhynchospora rariflora (Michx.) Elliott
40. Species Phaeocephalum schoenoides House accepted as Rhynchospora elliottii A.Dietr.
41. Species Phaeocephalum solitare (R.M.Harper) House accepted as Rhynchospora solitaria R.M.Harper
42. Species Phaeocephalum stipitatum (Chapm.) House accepted as Rhynchospora odorata C. Wright ex Griseb.
43. Species Phaeocephalum torreyanum (A.Gray) House accepted as Rhynchospora torreyana A.Gray
44. Species Phaeocephalum tracyi (Britton) House accepted as Rhynchospora tracyi Britton
45. Species Phaeocephalum ciliaris House (uncertain > unassessed)

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