Juncus brachycephalus (Engelmann) Buchenau. Subgenus: Juncus. Section: Ozophyllum. Small-headed Rush. Phen: Jun-Sep. Hab: Calcareous fens and seeps. Dist: NS west to ND, south to MA, OH, and IL; disjunct southward in VA, n. GA, TN, and CO (Falsely reported for AL).
ID notes:Of section Ozophyllum (containing septate leaves), this species is conspicuous in having obtuse to acute outer tepals. Found only in calcareous wetlands.
Origin/Endemic status: Native
Synonymy: = AqW, C, F, FNA22, G, GrPl, Il, K1, K3, K4, Mi, NE, NY, Pa, Tn, Va, Kirschner (2002b); = Verojuncus brachycephalus (Engelm.) Záv.Drábk. & Proćków – Proćków & Záveská Drábková (2023)
Wetland Indicator Status:
Heliophily: 9
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