Cyperus subsquarrosus (Muhlenberg) Bauters. Smallflower Halfchaff. Phen: Jul-Aug. Hab: Riverbank draw-down zones, other moist sandy areas, like seasonally flooded shores of artificial impoundments. Dist: ME west to ON and MN, south to s. FL and TX; south into tropical America.

Origin/Endemic status: Native

Synonymy: = K4, NY, Bauters et al (2014); = Hemicarpha micrantha (Vahl) Pax – F, GrPl, GW1, Il, RAB; = Hemicarpha micrantha (Vahl) Pax var. micrantha – C, Tx; = Hemicarpha micrantha (Vahl) Pax var. minor (Schrad.) Friedl. – G; = Lipocarpha micrantha (Vahl) G.C.Tucker – ETx1, FNA23, K3, Mex, Mi, Mo1, NcTx, NE, Pa, Tn, Va, WH3, Goetghebeur & Van den Borre (1989), Tucker (1987); < Hemicarpha micrantha (Vahl) Pax – K1, S, S13

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (name change)
• Great Plains: FACW (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