Panicum knudsenii H. St. John , Phytologia 63: 370. 1987.
Type information:
Holotype [BISH]. C.N. Forbes 875.K. 7-18 July-August 1917. Kaua`i: Alakai Swamp; Waimea drainage basin, west side.

Note: Date from Forbes's field books.

=Dichanthelium hillebrandianum
Note: Date from Forbes's field books.

*Verification: M. Strong, W.L. Wagner.