Strict Blue-eyed Grass -or- Mountain blue-eyed grass -or- Common blue-eyed grass
(Sisyrinchium montanum)

Strict Blue-eyed Grass Flower
The pointy tips of the petals look sassy, don'tcha think?
Strict Blue-eyed Grass reproductive
Reproductive macro. The plant produces a capsule-like fruit
with multiple chambers that splits open when mature. A great example is on Flickr, here.
Strict Blue-eyed Grass Backside
The inflorescence giving you it's backside;
pedicle (stalk of the flower) topped with the ovary
(type inferior-petals attached at top).
Strict Blue-eyed Grass Flower
Good illustration of the plant's spath (a large bract or pair of bracts subtending and often enclosing an inflorescence). Weber's key specifies: spathes pendunculate (common stalk of a flower cluster), 1 to several, from the axil of a leaf-like bract. Perfect. Another example of a plant with a classic spath on this site is here.
See details about this species on the loco gallery page here.