Juncus bufonius Linnaeus. Subgenus: Agathryon. Section: Tenageia. Phen: (May-) Jun-Nov. Hab: Wet, open ground, roadsides, dried pools, drawdown shores. Dist: Cosmopolitan, and polymorphic; a number of varieties and segregate species have sometimes been recognized, but need additional study.
ID notes:Can only be mistaken for J. ranarius or depauperate J. tenuis: J. bufonus can be distinguished from J. tenuis by its small stature and inflorescence beginning just a few inches above the ground. Very similar to J. ranarius (see characters in key).
Origin/Endemic status: Native
Synonymy: = GrPl, Mi, NE, NY; = Juncus bufonius L. var. bufonius – C, F, G, K1, K4, Mo1; < Juncus bufonius L. – Ar, ETx1, FNA22, GW1, K2, K3, Meso6, NcTx, Pa, RAB, S, Tn, Tx, Va, W, WH3, WV, Kirschner (2002b), Kirschner (2002c); > Juncus bufonius L. var. bufonius – Il; > Juncus bufonius L. var. congestus Wahlenb. – Il