Beckmannia syzigachne (Steudel) Fernald. American Slough Grass. Phen: Mar-Sep. Hab: Exposed reservoir shores and bottoms, disturbed areas. Dist: NL (Labrador) and NS west to YT and AK, south to ME, NY, n. OH, IL, KS, NM, AZ, and CA; disjunct in sw. TN and n. MS; Asia. Scattered occurrences south and east of its main distribution are likely adventive introductions by waterfowl or humans. Reported for Hardin County, TN (K3, FNA). Uncommon on an exposed reservoir bottom in n. MS with Alopecurus carolinianus (J.R. Rigby, pers.comm., April 2017).
Origin/Endemic status: Native
Synonymy: = C, F, FNA24, G, Il, K3, K4, Mi, NE, NY; = n/a – Pa
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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