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Juncus dichotomus Elliott. Subgenus: Agathryon. Section: Steirochloa. Forked Rush. 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: = AqW, Ar, ETx1, FNA22, GW1, K3, K4, NcTx, NE, NY, Pa, Tn, Tx, Va, W, WH3, WV, Kirschner (2002b), Kirschner (2002c); = Agathryon dichotomum (Elliott) Záv.Drábk. & Proćków – Proćków & Záveská Drábková (2023); = Juncus tenuis Willd. var. dichotomus (Elliott) Alph.Wood – C, Meso6; > Juncus dichotomus Elliott – F, RAB, Tat; > Juncus dichotomus Elliott var. dichotomus – G, K1, S; > Juncus dichotomus Elliott var. platyphyllus Wiegand – G, K1, S; > Juncus platyphyllus (Wiegand) Fernald – F, RAB, Tat

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW
  • Eastern Mountains and Piedmont: FACW
  • Great Plains: FACW
  • Midwest: FACW
  • Northcentral & Northeast: FACW

Heliophily ?: 9

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Keith Bradley | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷


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