Iris prismatica
Slender blue iris

Iris prismatica
Iris prismatica
photo, Renee Brecht
Britton & Brown
Botanical name: Iris prismatica
Common name: Slender blue iris
Group: monocot
Family: Iridaceae
Growth type: forb/herb
Duration: perennial
Origin: native
Plant height: 1 - 3'
Foliage: Slender blueflag leaves look almost like grass, less  than 1/4 inch wide. May be confused with larger blueflag, which has leaves are a half to one inch wide.
Flower: irregular blue to purple flowers, 2.5 to 4 inches
Flowering time: Flowers late May to late June; capsules sharply 3-angled, almost winged
Habitat: marshes (fresh, brackish, or salt), shores, or meadows along the coast
Range in New Jersey: occasional in northern counties, common in the middle and pine barrens districts.
Heritage ranking, if any: n/a
Misc. USDA lists as an obligate wetlands species; i.e.,  occurs almost always (estimated probability 99%) under natural conditions in wetlands.

Iris, Rainbow colored, iridescent; Iris was the Greek goddess of the rainbow; prismatica, like a prism.