Sisyrinchium angustifolium Mill. - Narrow-leaved Blue-eyed Grass


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Sisyrinchium angustifolium - (image 1 of 5)



Family: Iridaceae


Meadows, prairies, damp woods.




Newfoundland west to MN, south FL to TX.


Herbaceous perennial monocot to 50 cm; stems spreading, flattened, broadly winged, the upper part appearing branched. Leaves 2-6 mm wide. Spathes more than one, evidently pedunculate, arising from the axils of leaf-like bracts; margins of outer bracts united for more than 3 mm at the base, the inner bract more than 13 mm long and about equal or shorter than the outer bract; tepals 7-10 mm, blue. 


Flowers late May to August

Wetland indicator: Facultative Wetland -

Uncommon in the Chicago region.


Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY


Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.




 Michael Hough 2009