6 918895 Schoenoplectus americanus (Pers.) Volkart [125 921340 Scirpus americanus Pers.] A. Fiori, G. Paoletti, Iconogr. Fl. Ital.: p. 53, t. 409, fig. 9 (1895-1904)
921340 Schoenoplectus americanus test 17 Bartonia, vol. 58 : p. 58, fig. 8c,d (1994)
Scirpus olneyi test 8 A. Gray D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 180 a-e (1972) [B.N. Culbertson]