Rhyncospora Glomerata Vahl, p. 179

[47] 48 Rhyncospora Glomerata Vahl.

Syn. R. capitellatus Vahl. Schoenus glomeratus Linn. S. capitellatus Michx. S. capitatus Pers.

Leaves linear, flat; spikes numerous in distant clusters or heads, [ob]ovoid-oblong; achenium smooth, lenticular, obovate, margined, narrowed at the base, as long as the lance-awl-shaped flattened tubercle; bristles barbed downwards, as long as the tubercle. Culms 1 to 2 feet high. Flowers in August.

Low grounds. Ohio and Michigan. Extends to the southern states.