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Iris prismatica Pursh ex Ker Gawl. Iris carolina Radius Iris prismatica Pursh ex Ker Gawl. var. austrina Fernald Slender blue flag, blue flag
Slender blue flag is a North American native species. Identification: These irises are found in marshes, in both fresh and salt water, and in coastal meadows. They are 12-36" (30-91 cm) high, with attractive purplish blue flowers atop long stems, 2½-4" (6.3-10 cm) in size. Leaves are thin, long, and narrow, like large grass blades.
Wild Iris found in Newbury, Massachusetts (USA) 01951 on Newman Road. These flowers grow on an elevated spot on the salt marsh. An entire field of these irises can be found on Scotland Road, Newbury, MA 01951: cows graze here in an elevated salt marsh field. These are beardless iris, Iris Limniris (limniris is the sub-genus). My best guesses for species are Iris prismatica (slender blue iris) or Iris versicolor (northern/harlequin blue flag), but I haven’t done a proper tax’ing. The spot on the marsh where these can be found is lower than where Phragmites australis grows and higher than where the Distichlis spicata “wrack” grows. Photo and description by Lauren Noyes. Online References:
Iris prismatica on the Connecticut Botanical Society's Connecticut wildflowers site Iris prismatica at the Lady Bird Johnson Wildflower Center Iris prismatica at Maine.gov’s Department of Conservation Maine Natural Areas Program Iris prismatica on the USDA Plants Database Iris prismatica on eFloras Iris prismatica description by Thomas H. Kent, last updated 25 May 2020.
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6/15/2010 · Garden in the Woods, Framingham, MA
10/2/2020 · Wildlife Pond Loop Trail, Beaver Brook Association Conservation Lands, Hollis, NH
5/17/2010 · Wildlife Pond Loop Trail, Beaver Brook Association Conservation Lands, Hollis, NH Range:
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ID is uncertain 
