Bolboschoenus

Included in Scirpus in Michigan Flora.

1. Styles 3-cleft; achenes distinctly 3-angled, 4–5 mm long; involucres mostly with 3–5 well-developed bracts; perianth bristles strong, distinctly retrorse-barbed.

B. fluviatilis

1. Styles 2-cleft; achenes biconvex, 3–4 mm long; involucre with 2 well-developed bracts; perianth bristles weak, scarcely half as long as achene, obscurely barbed.

B. maritimus

All species found in Bolboschoenus

Bolboschoenus fluviatilisBULRUSH 
Bolboschoenus maritimusBULRUSH 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. April 20, 2019. https://michiganflora.net/genus.aspx?id=Bolboschoenus.