Stenanthium gramineum (Ker Gawler) Morong var. robustum (S. Watson) Fernald. Phen: Jul-early Sep; Aug-Oct. Hab: Bogs and wet meadows. Dist: PA west to IN, south to w. NC.
Origin/Endemic status: Endemic
Synonymy: = F, K1, WV; = Stenanthium robustum S.Watson – S; < Stenanthium gramineum (Ker Gawl.) Morong – C, FNA26, G, K4, Pa, RAB, Va, W