Juncus pylaei Laharpe. Subgenus: Agathryon. Section: Juncotypus. Common Rush. Phen: Jun-Sep. Hab: Moist soil, bogs, marshes, swamp forests, margin of streams, ponds, lakes and swamps, low meadows; overlooked and probably more widespread and common than shown. Dist: Throughout eastern North America, south at least to NC and SC. The mapped distribution is unusually speculative, owing to past lumping with Juncus effusus.
ID notes:Similar to J. effusus but with the stems being coarsely and conspicuously ridged much like a fluted column.
Origin/Endemic status: Native
Synonymy: = AqW, C, K1, K3, Mi, NE, NY, Hämet-Ahti (1980), Kirschner (2002b), Zika (2003), Zika (2013); = Agathryon pylaei (Laharpe) Záv.Drábk. & Proćków – Proćków & Záveská Drábková (2023); = Juncus effusus L. var. pylaei (Laharpe) Fernald & Wiegand – Pa; = n/a – Il; < Juncus effusus L. – FNA22, GW1, RAB, S, Va, W; > Juncus effusus L. var. costulatus H.St.John – F, Tat; > Juncus effusus L. var. pylaei (Laharpe) Fernald & Wiegand – F; < Juncus effusus L. var. solutus Fernald & Wiegand – G
Wetland Indicator Status:
Heliophily: 9
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