Cyperus compressus Linnaeus, Species Plantarum 1: 46. 1753.

"Habitat in Americae septentrionalis pratis arenosis." RCN: 392.

Lectotype (Tucker in Syst. Bot. Monogr. 43: 103. 1994): Clayton 598 (BM-000051698).

Current name: Cyperus compressus L. ( Cyperaceae).

Note: There appear to be problems with this name. Tucker (in Syst. Bot. Monogr. 2: 35. 1983) said that the type was "probably based on Sloane’s plate". However, later (in Syst. Bot. Monogr. 43: 103. 1994) he explicitly recognised Clayton 598 (BM) as the (holo)type, noting that McVaugh had pointed out his earlier “lapse” . Unfortunately, although Sloane’s plant is what has been known as C. compressus, Clayton’s specimen is apparently of C. rivularis Kunth, and Tucker (who calls this C. bipartitus Torr.) was presumably unaware that C. compressus should now displace the latter.