Eleocharis quadrangulata (Michaux) Roemer & J.A. Schultes. Subgenus: Limnochloa. Section: Limnochloa. Common name: Squarestem Spikerush. Phenology: Jun-Sep. Habitat: Pools, marshes. Distribution: MA west to ON and MI, south to n. FL, TX, and n. Mexico.
Origin/Endemic status: Native
Taxonomy Comments: A rare, apparently infertile hybrid between E. cellulosa and E. quadrangulata (E. ×inaequilatera D.J. Rosen & C. Reid), with unequally quadrangular culms, has been reported from LA and TX (Rosen and Reid 2015).
Synonymy ⓘ: = Ar, C, Can, ETx1, FNA23, GrPl, GW1, Il, K4, Mi, Mo1, NcTx, NE, NS, NY, Pa, POWO, RAB, S, Tat, Tn, Tx, Va, WH3, WV, Angelo, Rosen, & Lange (2020); > Eleocharis quadrangulata (Michx.) Roem. & Schult. var. crassior Fernald — F, G; > Eleocharis quadrangulata (Michx.) Roem. & Schult. var. quadrangulata — F, G; Scirpus quadrangulatus Michaux — (basionym)
Links to other floras: = Eleocharis quadrangulata - FNA23
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL
- Eastern Mountains and Piedmont: OBL
- Great Plains: OBL
- Midwest: OBL
- Northcentral & Northeast: OBL
Heliophily ⓘ: 9
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