Note 51 — Art. VI. An Account of two North American Species of Rottböllia, discovered on the Sea-coast in the State of Georgia.

Mr. Nuttall will excuse me for retaining my own specific name. His knowledge of this plant was derived from my Herbarium, where he found it under the name of tripsacum cylindricum, Mich? Although it can hardly be the plant of Michaux, it was so considered by the late Dr. Muhlenberg, when specimens were first communicated to him. It remains under this name in his Herbarium, but is not included in his work on the grasses. He left it for me to describe along with other new and doubtful plants from the south.