Cyperus polystachyos Rottb. f. pernanus Kük., Pflanzenr. IV. 20 (Heft 101, 3): 371. 1936.
Type information:
Holotype [B]. E. L. Caum 17. 18 April 1931. Lehua. Isotype(s) [BISH! [2]].
=Cyperus polystachyos

*Verification: W.L. Wagner, D.M. Mix.