Blue-eyed Grass (Sisyrinchium)

2012-5-19 D&M, MD

S. angustifolium
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green spathe, one flower per stem
occasionally a second flower on a longer peduncle
The flowers are consistently deep blue-violet, rather than pale blue or white.
plant description
http://www.illinoiswildflowers.info/prairie/plantx/sbe_grassx.htm

this shows the width of the stem and the length of the peduncle (stem the flowers are on):
http://www.ct-botanical-society.org/galleries/sisyrinchiumangu.html

S. mucr