Juncus tenuis Willdenow. Subgenus: Agathryon. Section: Steirochloa. Common name: Path Rush, Slender Rush, Poverty Rush. Phenology: Jun-Sep. Habitat: Dry or moist soil along roadsides and paths, fields. Distribution: NL (Labrador) west to AK, south to FL, TX, CA, and n. Mexico; Central and South America; introduced widely around the world.

ID notes: Similar to J. anthelatus but the heads are more congested on shorter inflorescence branches. Distinguished from J. dichotomus, J. dudleyi, and J. interior by the long membranous auricle.

Origin/Endemic status: Native

Taxonomy Comments: J. tenuis as it is here treated includes J. tenuis var. williamsii Fernald, which has a more congested inflorescence with arched to recurved inflorescence branches.

Synonymy ⓘ: = AqW, Ar, Can, ETx1, FNA22, Il, K4, Mi, NcTx, NE, NY, Tn, Va, Kirschner (2002b), Kirschner (2002c); = Agathryon tenue (Willd.) Záv.Drábk. & Proćków — Proćków & Záveská Drábková (2023); < Juncus tenuis Willd. — G, GrPl, GW1, RAB, S, Tat, Tx, W, WH3; < Juncus tenuis Willd. var. tenuis — C, Meso6, Mo1, Pa, WV; > Juncus tenuis Willd. var. tenuis — F; > Juncus tenuis Willd. var. williamsii Fernald — F; Juncus tenuis Willd. Basionym: Juncus tenuis Willd. 1799

Links to other floras: = Juncus tenuis - FNA22

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Wetland Indicator Status:

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

Heliophily ⓘ: 6