Juncus roemerianus Scheele. Subgenus: Juncus. Section: Juncus. Common name: Black Needle Rush. Phenology: Jan-Jun; May-Oct. Habitat: Coastal tidal marshes, forming dense stands at and above mean high tide, above the Spartina alterniflora (= Sporobolus alterniflorus) zone. Distribution: MD to s. FL, west to se. TX; Bahamas; Hispaniola.

ID notes: Among all Juncus this species may be the most common in the flora region, forming blackish, monospecific stands (sometimes of thousands of acres) in brackish habitats. The culm tips are very sharp and the capsules are markedly shorter than the tepals.

Origin/Endemic status: Native

Taxonomy Comments: See Eleuterius (1977) for additional information on this species.

Synonymy ⓘ: = AqW, Bah, C, ETx1, F, FNA22, G, GW1, K4, RAB, S, Tat, Tx, Va, WH3, Kirschner (2002b), Proćków & Záveská Drábková (2023). Basionym: Juncus roemerianus Scheele 1849

Links to other floras: = Juncus roemerianus - FNA22

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL
• Great Plains: OBL

Heliophily ⓘ: 9