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Family	Scientific Name	Common Name	Habitat	Distribution	Image
Iridaceae	Sisyrinchium albidum	White Blue-eyed-grass	Woodlands, mesic longleaf pine sandhills, open limestone barrens, prairies.	S. NY west to s. WI, south to Panhandle FL and e. TX.
Iridaceae	Sisyrinchium angustifolium	Common Blue-eyed-grass, Narrow-leaved Blue-eyed-grass, Stout Blue-eyed-grass	Woodlands, forests, meadows, longleaf pine sandhill swales.	VT, NH, and s. ON west to WI, e. KS, and OH, south to GA, AL, LA, and e. TX.
Iridaceae	Sisyrinchium arenicola	Sandyland Blue-eyed-grass	Pine-oak/heath woodlands and barrens, other sandy habitats.	A Coastal Plain endemic: MA to e. MD (Caroline Co.) (Knapp et al. 2011).
Iridaceae	Sisyrinchium atlanticum	Atlantic Blue-eyed-grass, Eastern Blue-eyed Grass	Dry, sandy or rocky places, moist meadows, bogs, pine savannas, streambanks.	NS and ME west to OH, IN, and MO, south to s. FL and e. TX.
Iridaceae	Sisyrinchium biforme	Wiry Blue-eyed-grass	Dunes, prairies, other sandy soils.	E. LA west to s. and c. TX and south into Mexico (TAM).
Iridaceae	Sisyrinchium calciphilum	Glade Blue-eyed-grass, Alabama Blue-eyed-grass, Limestone Blue-eyed-grass	Calcareous glades.	Endemic to n. AL.
Iridaceae	Sisyrinchium campestre	Prairie Blue-eyed-grass	Prairies, especially in sandy soils.	MI and SD south to MS and NM.
Iridaceae	Sisyrinchium capillare	Wiry Blue-eyed-grass	Wet pine savannas and flatwoods, acid seepages in the lower Piedmont.	Mainly Coastal Plain, from se. VA south to ne. FL.
Iridaceae	Sisyrinchium corymbosum		Pinelands.	Se. GA and ne. FL west to s. AL.
Iridaceae	Sisyrinchium dichotomum	White Irisette, Isothermal Irisette	Dry to mesic woodlands and forests, usually over mafic rocks (such as amphibolite), at low to moderate elevations (400-1000 m) in the Blue Ridge escarpment.	Endemic to Henderson, Polk, and Rutherford counties, NC, and Greenville County, SC.
Iridaceae	Sisyrinchium elizabethiae	Elizabeth's Blue-eyed-grass	Dry woodlands and forests over deep sandy soils.	E. TX & w. LA.
Iridaceae	Sisyrinchium ensigerum	Swordleaf Blue-eyed-grass	Prairies.	OK south to c. TX and Mexico.
Iridaceae	Sisyrinchium fuscatum	Coastal Plain Blue-eyed-grass	Xeric to dry soils of pine barrens, Carolina bay rims, longleaf pine sandhills, fluvial sand ridges.	E. VA south to n. FL, west to LA.
Iridaceae	Sisyrinchium helleri	Heller's Blue-eyed-grass	Calcareous coastal prairies and adjacent roadsides.	Endemic in se. to s. TX.
Iridaceae	Sisyrinchium langloisii	Pale Blue-eyed-grass	Sandy woodlands.	AR and OK south to w. LA and s. TX; allegedly disjunct eastward in AL, GA, MS, TN, and nw. GA, but some of these records at least are suspect.
Iridaceae	Sisyrinchium miamiense	Miami Blue-eyed-grass	Moist disturbed areas.	Ne. FL, s. GA, and se. SC south to s. FL and west to s. MS; West Indies.
Iridaceae	Sisyrinchium micranthum	Lawn Blue-eyed-grass, Fairy Stars, Annual Blue-eyed-grass	Lawns, roadsides, prairies, pinelands.	Apparently introduced from South America (se. VA south to s. FL, west to e. TX).
Iridaceae	Sisyrinchium minus	Least Blue-eyed-grass	Floodplains, mudflats, ditches, oak flatwoods, oak savannas, prairies.	E. LA, n. LA, se. AR, west to c. TX and n. Mexico; disjunct in sw. AL (Black Belt) and reportedly MS. The AL occurrences are reported and discussed by England & Keener (2017). Reported for NC (Sida 1962) and MS {check}.
Iridaceae	Sisyrinchium montanum var. crebrum		{habitat in our area not known}.	NL (Newfoundland) and ON south to NY and n. NJ. The status of this taxon in our area is not clear. S. montanum var. crebrum is reported for VA by F, and S. montanum (variety not specified) is reported for NC and VA by C and G. FNA considers var. crebrum to range south only to NY, and var. montanum south only to OH and PA. Kartesz (2022) only documents this variety from CT northwards. Herbarium documentation is needed.
Iridaceae	Sisyrinchium montanum var. montanum		Forests, fields.	NL west to AK, south to NJ, PA, WV, n. OH, nw. IN, ne. IL, nc. OK, NM. Reported for n. WV (Harmon, Ford-Werntz, & Grafton 2006). Reported for n. VA (Fauquier County) and disjunct southwards in the Mountains of NC (Jackson County) (B.A. Sorrie, pers.comm., 2024; specimens at NCU).
Iridaceae	Sisyrinchium mucronatum	Needle-tip Blue-eyed-grass	Forests, woodlands, fields.	ME west to SK, south to SC, GA, TN, MI, and MN.
Iridaceae	Sisyrinchium myrioflorum		Deep sandy soils on the South Texas Sandsheet and closely adjacent.	S. TX.
Iridaceae	Sisyrinchium nashii	Nash's Blue-eyed-grass	Dryish woodlands and forests, longleaf pine sandhills, pine rocklands, scrubby flatwoods.	NC and TN (and sw. VA?) south to s. FL and MS.
Iridaceae	Sisyrinchium pruinosum		Prairies and calcareous glades and barrens.	AR south to w. LA and AR; disjunct at scattered localities eastward in e. LA, MS, AL, and sc. TN.
Iridaceae	Sisyrinchium rufipes		Xeric-dry longleaf pine sandhills, fluvial sand ridges.	Se. NC to n. FL, west to s. AL.
Iridaceae	Sisyrinchium sagittiferum	Spear-bract Blue-eyed-grass	Low wet areas.	S. AR and s. OK south to e. LA, w. LA, and e. TX. Supposedly ranges east to AL (FNA), these reports regarded as unsubstantiated (D. Spaulding, 2013, pers. comm.).
Iridaceae	Sisyrinchium species 1 [Buck Creek]	Buck Creek Blue-eyed-grass	Serpentine barrens.	Endemic as far as is known to the Buck Creek Serpentine Barren, Clay County, NC.
Iridaceae	Sisyrinchium species 2 [chalk]	Chalk Belt Blue-eyed-grass	Limestone outcrops and other calcareous woodlands, Jackson prairies	Coastal Plain of GA, AL, and MS.
Iridaceae	Sisyrinchium species 3
Iridaceae	Sisyrinchium texanum	Texas Blue-eyed-grass	Sandy or loamy coastal prairies, fields, grassy bayous, and adjacent roadsides.	Se. TX.
Iridaceae	Sisyrinchium varians	Variable Blue-eyed-grass	Calcareous woodlands, prairies, and adjacent roadsides usually closely adjacent to rocky or gravelly outcroppings.	Endemic in se. TX.
Iridaceae	Sisyrinchium xerophyllum	Florida Blue-eyed-grass	Florida scrub and other xeric sandy sites.	S. GA (?) south to s. peninsular FL; also alleged to occur in NC (FNA) but this report does not seem plausible.