Flora of the Southeastern United States

Rhynchospora glomerata (Linnaeus) Vahl. Common name: Clustered Beaksedge. Phenology: Jul-Sep. Habitat: Pine savannas, bogs, acidic seeps inland, other wet habitats. Distribution: S. New Jersey south to ne. Florida, Florida Panhandle, and west to e. Texas, and inland in Kentucky, Tennessee, Arkansas, and Kansas.

ID notes: A rather common beaksedge that should be learned by field botanists as a comparison point for other species. It is a coarser plant than R. capitellata, its spikelet clusters larger and tending to arch outward and often causing the stem to lean. Its achenes are much longer (1.5-2.0 mm vs. 1.2-1.5). In the West Gulf Coastal Plain, its distribution overlaps with that of R. angusta; see Rhynchospora key D.

Origin/Endemic status: Endemic

Synonymy ⓘ: = K4, POWO, Sorrie, LeBlond, & Weakley (2018a) in Weakley et al (2018b); = Rhynchospora glomerata (L.) Vahl var. glomerata — K1, NS, Va, McMillan (2007); = Rynchospora glomerata (L.) Vahl var. typica Gale — Gale (1944); < Rhynchospora cymosa Elliott; < Rhynchospora glomerata (L.) Vahl — Ar, C, ETx1, F, FNA23, G, GW1, Il, NcTx, RAB, S, Tat, Tn, Tx, W, WH3, Ciafré & Naczi (2022), Naczi & Moyer (2017); > Rhynchospora glomerata (L.) Vahl var. paniculata (A.Gray) Chapm. — S13; >< Rynchospora glomerata Vahl ex Kunth var. glomerata — S13, orthographic variant. Basionym: Schoenus glomeratus L. 1753

Links to other floras: < Rhynchospora glomerata - FNA23

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Wetland Indicator Status:

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

Heliophily ⓘ: 8