Sisyrinchium angustifolium

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Common Names: narrowleaf blue-eyed grass [1]

Sisyrinchium angustifolium
Sisyrinchium angustifolium IWF.jpg
Photo by John Hilty hosted at
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Moncots
Order: Liliales
Family: Iridaceae
Genus: Sisyrinchium
Species: S. angustifolium
Binomial name
Sisyrinchium angustifolium
Natural range of Sisyrinchium angustifolium from USDA NRCS Plants Database.

Taxonomic Notes

Synonym: S. graminoides (E.P. Bicknell)

Variety: none


S. angustifolium is a perennial forb/herb of the Iridaceae family that is native to North America. [1]


S. angustifolium is found throughout the eastern North American Continent, as far west as Texas, Kansas, and Ontario, Canada. [1]



Typical habitats for this grass include woodlands, forests, meadows, and sandhill swales. [2] Specimens have been collected from pine savanna after a burn, drying sandy loam, dry upland pine-oak hickory woods near a river, and moist loamy sand near small pond. [3]

Soils with a medium to fine texture is more hospitable to S. angustifolium. [1]

The grass has a intermediate tolerance for shade and a low tolerance for shade. [1]


S. angustifolium has been observed to flower from January to May with peak inflorescence in April. [4]

Fire ecology

The grass has a high tolerance for fire. [1]

Conservation and Management

Cultivation and restoration

Photo Gallery

References and notes

  1. 1.0 1.1 1.2 1.3 1.4 1.5 USDA Plant Database
  2. Weakley, A. S. (2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC, University of North Carolina Herbarium.
  3. URL: Last accessed: June 2018. Collectors: Loran C. Anderson, R.A. Norris, R.K. Godfrey, R. Lomarek, Rodie White, Richard S. Mitchell, J. Kevin England, Marli Rikard. States and counties: Florida (Franklin, Wakulla, Jackson, Gilchrist, Levy, Alachua, Jefferson, Liberty, Leon, Gadsden, Holmes, Hamilton) Alabama (Winston) Georgia (Grady, Thomas)
  4. Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. Accessed: 29 MAY 2018