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Iris prismatica

Iris prismatica

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Iridaceae
Subfamilia: Iridoideae
Tribus: Irideae
Genus: Iris
Subgenus: I. subg. Limniris
Sectio: I. sect. Limniris
Series: Iris ser. Prismaticae
Species: Iris prismatica

Iris prismatica Pursh ex Ker Gawl., Bot. Mag. 37: t. 1504. 1812.


Limniris prismatica (Pursh) Rodion., Bot. Zhurn. (Moscow & Leningrad) 92(4): 552. 2007.

Iris boltoniana Schult., Mant. 1: 308. 1822.
Iris gracilis Bigelow, Fl. Boston. 12. 1814.
Iris prismatica var. austrina Fernald, Rhodora 49: 133. 1947.
Iris trigonocarpa A.Braun & C.D.Bouché, Ind. Sem. Hort. Berol. 1853: 17. 1853.
Iris virginica A.Gray, Manual, ed. 5, 516. 1867, nom. illeg. non L. (1753).

Native distribution areas:
Iris prismatica

Continental: Northern America
Regional: Eastern USA
Alabama, Connecticut, Delaware, Georgia, Kentucky, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Rhode I., South Carolina, Tennessee, Virginia

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Ker Gawler, J.B. (1812) Botanical Magazine; or, Flower-Garden Displayed... London 37: t. 1504. 1812
Pursh, F.T. 1813 "1814". Flora Americae Septentrionalis, or, A systematic arrangement and description of the plants of North America. Vol. 1. xxxv + 358 pp., London: White, Cochrance, and co. BHL Reference page. : 1: 30.

Additional references

Flora of North America Editorial Committee (2002). Flora of North America North of Mexico 26: 1-723. Oxford University Press, New York, Oxford.


Govaerts, R. et al. 2022. Iris prismatica in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2022 Feb 15. Reference page. 
Hassler, M. 2022. Iris prismatica. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2022. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2022 Feb 15. Reference page. 
Tropicos.org 2022. Iris prismatica. Missouri Botanical Garden. Published online. Accessed: 15 Feb 2022.
International Plant Names Index. 2022. Iris prismatica. Published online. Accessed: Feb 15 2022.
USDA, ARS, Germplasm Resources Information Network. Iris prismatica in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 2022 Feb 15.
eFloras 2008. Iris prismatica in Flora of North America . Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Vernacular names
English: slender blue iris

Iris prismatica, the slender blue flag or cubeseed iris,[2] is a plant species native to parts of the southern and eastern United States from Maine south to Alabama, as well as to the Canadian provinces of Ontario and Nova Scotia.[3][4][5]

Iris prismatica is a perennial herb spreading by means of rhizomes that are close to the surface of the soil. Flowering stalks can reach a height of 80 cm. Leaves are long and narrow, up to 60 cm long but rarely more than 5 mm across. It has 2–3 blooms in May.[2] Flowers are pale blue to blue-violet.[6][7][8][9][10] It tends to grow in swampy,[2] wet conditions,[3] and within the United States, it is currently state listed as 'threatened' in Maine, New Hampshire, New York, and Tennessee, and state listed as 'endangered' in Maryland and Pennsylvania.[11] It is cold hardy to USDA Zone 3.[2]

The Plant List, Iris prismatica
Donald Wyman Wyman's Gardening Encyclopedia, p. 576, at Google Books
Flora of North America v 26 p 395, Iris prismatica
BONAP (Biota of North America Project) floistic synthesis, Iris prismatica
Rodionenko, Georgi Ivanovich. 2007. Botaničnyj Žurnal 92: 552. 2007.
Pursh, Frederick Traugott. 1813. Flora Americae Septentrionalis 1: 30.
Godfrey, R. K. & J. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States Monocotyledons 1–712. The University of Georgia Press, Athens.
Chester, E. W. 1993. Atlas of Tennessee Vascular Plants Volume 1. Pteridophytes, Gymnosperms & Moncots. 118 pp.
Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Manual of the Vascular Flora of the Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill.
Gleason, H. A. & A.J. Cronquist. 1968. The Pteridophytoa, Gymnospermae and Monocotyledoneae. 1: 1–482. In H. A. Gleason New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada. New York Botanical Garden, New York.
"Natural Resources Conservation Service". United States Department of Agriculture. Retrieved 22 May 2014.

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