Juncus longii Fernald. Subgenus: Juncus. Section: Graminifolii. Common name: Long’s Rush. Phenology: Jun-Aug. Habitat: Usually in very wet, often inundated sites, bogs, ditches, rooting in clay or peat. Distribution: MD south through VA, NC, SC to s. MS and se. LA (Urbatsch 2013), mainly in the Coastal Plain; disjunct inland in boggy sites, as in w. NC, nc. GA, TN, and n. AL (Knapp & Naczi 2008, more extensive distributions are based on misattribution).
ID notes: Among section Graminifolii, which is recognizable by the flat leaves lacking septae and rounded capsules in heads (glomerules), J. longii has a very dense and congested inflorescence. The rhizomes are long with well-spaced rhizome scales.
Origin/Endemic status: Endemic
Taxonomy Comments: See Knapp & Naczi (2008) for clarification of the Juncus marginatus complex.
Synonymy ⓘ: = AqW, F, K4, RAB, Tn, Va, Knapp & Naczi (2008); = Juncus aristulatus Michx. var. aristulatus — S; = n/a — Tat; < Boreojuncus marginatus (Rostk.) Záv.Drábk. & Proćków — Proćków & Záveská Drábková (2023); < Juncus biflorus Elliott — C, G; < Juncus marginatus Rostk. — FNA22, GW1, WH3, Kirschner (2002b). Basionym: Juncus longii Fernald 1937
Links to other floras: < Juncus marginatus - FNA22
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL
- Eastern Mountains and Piedmont: OBL
Heliophily ⓘ: 9
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© Gary P. Fleming | Original Image ⭷
© Gary P. Fleming | Original Image ⭷Feedback
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