Juncus dichotomus Elliott. Subgenus: Agathryon. Section: Steirochloa. Phen: May-Oct. Hab: Often in disturbed, open, wet areas, ditches, wet meadows. Dist: MA to c. peninsular FL, west to OK and TX; Central America.
ID notes:Distinguished from J. anthelatus and J. tenuis by the shorter, rounded, scarious auricles. Distinguished from J. dudleyi by having brown drab auricles, and distinguished from the very similar J. interior by the light brown or darker capsules.
Origin/Endemic status: Native
Taxonomy Comments: The character used to separate J. platyphyllus (Wiegand) Fernald from J. dichotomus (flat leaf blade vs. terete leaf blade) does not appear to be reliable; leaf blades from culms in the same clump may vary from flat to slightly involute to completely terete.
Synonymy: = Ar, ETx1, FNA22, GW1, K3, K4, NcTx, NE, NY, Pa, Tn, Tx, Va, W, WH3, WV, Kirschner (2002b), Kirschner (2002c); = Juncus tenuis Willd. var. dichotomus (Elliott) Alph.Wood – C, Meso6; > Juncus dichotomus Elliott – F, RAB; > Juncus dichotomus Elliott var. dichotomus – G, K1, S; > Juncus dichotomus Elliott var. platyphyllus Wiegand – G, K1, S; > Juncus platyphyllus (Wiegand) Fernald – F, RAB