Biology:Iris prismatica
| Slender blue flag | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Iridaceae |
| Genus: | Iris |
| Subgenus: | Iris subg. Limniris |
| Section: | Iris sect. Limniris |
| Series: | Iris ser. Prismaticae |
| Species: | I. prismatica
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| Binomial name | |
| Iris prismatica Pursh
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| Synonyms[2] | |
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Iris prismatica, the slender blue flag or cubeseed iris,[3] is a plant species native to the Canadian provinces of Ontario and Nova Scotia, as well as to parts of the southern and eastern United States from Maine south to Alabama.[4][5][6]
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.[3] Flowers are pale blue to blue-violet.[7][8][9][10][11] It tends to grow in swampy,[3] wet conditions,[4] 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.[12] It is cold hardy to USDA Zone 3.[3]
References
- ↑ Smith, K. (2016). "Iris prismatica" (in en). IUCN Red List of Threatened Species 2016. doi:10.2305/IUCN.UK.2016-1.RLTS.T64315076A67729751.en. https://www.iucnredlist.org/species/64315076/67729751. Retrieved 28 July 2026.
- ↑ The Plant List, Iris prismatica
- ↑ 3.0 3.1 3.2 3.3 Donald Wyman Wyman's Gardening Encyclopedia, p. 576, at Google Books
- ↑ 4.0 4.1 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. http://plants.usda.gov/plant-profile?symbol=IRPR.
Wikidata ☰ Q15548150 entry
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