Sisyrinchium atlanticum E.P. Bicknell. Atlantic Blue-eyed-grass, Eastern Blue-eyed Grass. Phen: Mar-Jun; Jun-Aug. Hab: Dry, sandy or rocky places, moist meadows, bogs, pine savannas, streambanks. Dist: NS and ME west to OH, IN, and MO, south to s. FL and e. TX.

ID notes:"Other key characteristics of S. atlanticum are its bent or geniculate nodes and individuals that usually dry yellowish to light olive, strongly contrasting with the black fruiting capsules." (Spaulding et al. 2023)

Origin/Endemic status: Native

Synonymy: = Ar, C, ETx1, F, FNA26, G, GW1, Il, K1, K3, K4, Mi, Mo1, NE, NY, Pa, S, Tat, Tn, Tx, Va, W, Hornberger (1991); = Sisyrinchium mucronatum Michx. var. atlanticum (E.P.Bicknell) H.E.Ahles – RAB; < Sisyrinchium angustifolium Mill. – WH3; > Sisyrinchium atlanticum E.P.Bicknell – S13; > Sisyrinchium flexile E.P.Bicknell – S13; > Sisyrinchium longifolium E.P.Bicknell – S13; > Sisyrinchium nanum E.P.Bicknell – S13; > Sisyrinchium scoparium E.P.Bicknell – S13; > Sisyrinchium tracyi E.P.Bicknell – S13; > Sisyrinchium violaceum E.P.Bicknell – S13

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Wetland Indicator Status:

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

Heliophily: 8