Eleocharis macrostachya Britton. Subgenus: Eleocharis. Section: Eleocharis. Series: Eleocharis. Common name: Large Spikerush. Phenology: Jul-Oct. Habitat: Wet ditches, marshes, shorelines. Distribution: QC to AK south to WV, AL, MS, TX, CA, and Mexico; South America. Mapping is especially conjectural.
Origin/Endemic status: Native
Taxonomy Comments: See discussion of variation and informal variants in Smith et al. (2022).
Synonymy ⓘ: = Ar, Can, ETx1, FNA23, GrPl, Il, Mex, NS, POWO, Tx; < Eleocharis palustris (L.) Roem. & Schult. — C, K4, Mo1
Links to other floras: = Eleocharis macrostachya - FNA23
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 ⓘ: 9
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