Iris prismatica Pursh ex Ker Gawl.
Iris carolina Radius
Iris prismatica Pursh ex Ker Gawl. var. austrina Fernald
Slender blue flag, blue flag
|Kingdom||Plantae||Plants, but not fungi, lichens, or algae|
|Subkingdom||Tracheobionta||Vascular plants—plants with a “circulatory system” for delivering water and nutrients|
|Division||Magnoliophyta||Flowering plants, also known as angiosperms|
|Class||Liliopsida||Monocots (plants with a single seed leaf); includes the lily family|
|Subclass||Liliidae||Includes lilies, orchids, and many others|
|Order||Asparagales||A diverse group that includes asparagus|
|Family||Iridaceae||Iris family—perennial plants that grow from bulbs—also includes crocuses, gladiolas, and the genus Moraea|
|Genus||Iris||Latin for “iris”|
About plant names...
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
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.
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.
© FloraFinder.org. All rights reserved.
6/15/2010 · Garden in the Woods, Framingham, MA
≈ 16 × 24" (41 × 62 cm)
10/2/2020 · Wildlife Pond Loop Trail, Beaver Brook Association Conservation Lands, Hollis, NH ID is uncertain
5/17/2010 · Wildlife Pond Loop Trail, Beaver Brook Association Conservation Lands, Hollis, NH
≈ 16 × 14" (40 × 36 cm) ID is uncertain
About this map...