What is "bolboschoenus"

Bolboschoenus is a genus of plants in the sedge family, of nearly cosmopolitan distribution.

1. Bolboschoenus caldwellii (V.J.Cook) Soják - Australia, New Zealand
2. Bolboschoenus capensis (Burm.f.) Holub - Cape Province of South Africa
3. Bolboschoenus fluviatilis (Torr.) Soják - Australia, New Zealand, New Caledonia, Canada, United States, northeastern Mexico
4. Bolboschoenus glaucus (Lam.) S.G.Sm. - southern Europe, Africa, Middle East, Central Asia, India, Mongolia
5. Bolboschoenus grandispicus (Steud.) Lewej. & Lobin - coastal dunes in Senegal
6. Bolboschoenus laticarpus Marhold, Hroudová, Ducháček & Zákr - central Europe from Britain and France to Ukraine; Algeria, Turkey
7. Bolboschoenus maritimus (L.) Palla in W.D.J.Koch - widespread across much of temperate and subtropical Europe, Africa, Asia, North America, South America and various islands
8. Bolboschoenus medianus (V.J.Cook) Soják - Australia, New Zealand
9. Bolboschoenus nobilis (Ridl.) Goetgh. & D.A.Simpson - Angola, Namibia
10. Bolboschoenus novae-angliae (Britton) S.G.Sm. - northeastern United States from Maine south along the seacoast to Georgia
11. Bolboschoenus planiculmis (F.Schmidt) T.V.Egorova - much of Europe and Asia from Spain to Japan and south to New Guinea
12. Bolboschoenus robustus (Pursh) Soják - eastern United States; California, Bermuda, Bahamas, east coast of Mexico (from Tamaulipas to Tabasco), New Brunswick, northern South America
13. Bolboschoenus schmidii (Raymond) Holub - Iran, Central Asia
14. Bolboschoenus stagnicola (Raymond) Soják. - Pakistan
15. Bolboschoenus yagara (Ohwi) Y.C.Yang & M.Zhan - northern Eurasia from Germany and Sweden to Japan and Kamchatka, including Russia, Siberia, China