Juncus scirpoides Lamarck var. compositus R.M. Harper. Subgenus: Juncus. Section: Ozophyllum. Lobe-headed Rush. Phen: Jun-Oct. Hab: Roadsides, wet, open, disturbed areas. Dist: Coastal Plain: NC, GA, FL, AL, MS, LA, SC, TX, VA.

ID notes: Distinguished from var. scirpoides by its lobed heads. The capsules and tepals are usually so congested they are difficult to differentiate without magnification.

Origin/Endemic status: Endemic

Synonymy ⓘ: = S, Va; > Juncus glomeratus Batson – K1, nomen nudum; < Juncus scirpoides Lam. – AqW, C, FNA22, GW1, K3, K4, NcTx, RAB, Tx, WH3, Bridges & Orzell (2008), Kirschner (2002b), Knapp (2014); > Juncus scirpoides Lam. – K1; Juncus scirpoides Lam. var. meridionalis Buchenau – F, application uncertain; < Verojuncus scirpoides (Lam.) Záv.Drábk. & Proćków – Proćków & Záveská Drábková (2023)

Links to other floras: < Juncus scirpoides - FNA22

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
• Great Plains: FACW (taxonomic split from wetland indicator species)
• Midwest: FACW (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)

Heliophily ⓘ: 9