Flora of the Southeastern United States

Juncus gerardi Loiseleur-Deslongchamps ssp. gerardi. Common name: Blackfoot Rush, Blackgrass, Saltmarsh Rush, Saltmeadow Rush. Phenology: May-Jul. Habitat: Brackish marshes, salt marshes (including inland salt marshes), salt pannes, also in disturbed situations, such as on ballast (historically), inland along salted roadways, in slag. Distribution: Circumboreal, in North America from Greenland and Newfoundland and Labrador (Newfoundland) west to British Columbia, south to Virginia, Missouri, Oklahoma, Utah, and California (some of the southern occurrences perhaps introduced).

ID notes: Very similar to J. compressus, but usually found in saline habitats. The filaments and anthers are usually very dissimilar in length -- the anther being much larger -- whereas J. gerardi has anther and filament about equal in size. Both species have deep black capsules, a distinctive feature among species in our region.

Origin/Endemic status: Native

Synonymy ⓘ: = Can, POWO; (Alt) = Agathryon gerardii (Loisel.) Záv.Drábk. & Proćków — Proćków & Záveská Drábková (2023); = Juncus gerardi Loisel. — G, Il, K4, NY, Tat; = Juncus gerardii Loisel. — AqW, C, FNA22, GrPl, Mi, Mo1, NE, Pa, Va, W, orthographic variant; = Juncus gerardii Loisel. ssp. gerardii — Can, NSProv; > Juncus gerardi Loisel. var. gerardi — F; > Juncus gerardi Loisel. var. pedicellatus Fernald — F; > Juncus gerardii Loisel. ssp. gerardii — Kirschner (2002b); > Juncus gerardii Loisel. var. gerardii — K1, NS; > Juncus gerardii Loisel. var. pedicellatus — NS. Basionym: Juncus gerardi Loisel. 1809

Links to other floras: = Juncus gerardii - FNA22

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL (name change)
• Eastern Mountains and Piedmont: FACW (name change)
• Great Plains: OBL (name change)
• Midwest: OBL (name change)
• Northcentral & Northeast: OBL (name change)

Heliophily ⓘ: 9