Ontario Wildflowers website

Slender Blue-eyed Grass
Sisyrinchium mucronatum

Slender Blue-eyed Grass (Sisyrinchium mucronatum) Other common names: Narrow-leaved Blue-eyed Grass

Family: Iris Family (Iridaceae)

Group: Blue-eyed Grasses

Distinctive features: Looks like grass. Blue flower.

Similar species:
  •   White Blue-eyed Grass (Sisyrinchium albidum) - has white flowers.

  •   Common Blue-eyed Grass (Sisyrinchium montanum) - very similar, stem wider.

  •   Stout Blue-eyed Grass (Sisyrinchium angustifolium) - bracts aer different.


Flowers: Summer;  Blue/Violet;  6 parts (petals);  Summer. Blue with yellow center. Petals have distinctly pointed tips. Six parts. 1/2 - 3/4" wide.

Leaves: Like grass.

Height: 15-40 cm (6-16 in)

Stem: Flat, distinctly winged, 1/16" wide (Common Blue-eyed Grass stem is 1/8" wide). Unbranched and without a leafy bract in the middle. Pointed stem continues above flower cluster.

Habitat: Fields and Open Areas;  Fields and meadows, bogs, forest edges.

Books: Newcomb's Wildflower Guide: 332    Peterson's Field Guide to Wildflowers: 326    ROM Field Guide to Wildflowers of Ontario: 69   

Native/Non-native: Native

Notes: Closely resembling Common Blue-eyed Grass, it can be differentiated by measuring the width of the stem.

Photographs: 91 photographs available, of which 7 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.

Range Map is at the bottom of the page

Slender Blue-eyed Grass (Sisyrinchium mucronatum)

Slender Blue-eyed Grass flower.

Slender Blue-eyed Grass (Sisyrinchium mucronatum)

A nice bunch of Slender Blue-eyed Grass plants in bloom.

Slender Blue-eyed Grass (Sisyrinchium mucronatum)

Slender Blue-eyed Grass (Sisyrinchium mucronatum)

Slender Blue-eyed Grass plant.

Slender Blue-eyed Grass (Sisyrinchium mucronatum)

Slender Blue-eyed Grass (Sisyrinchium mucronatum)

Slender Blue-eyed Grass flower and seed pod.

Slender Blue-eyed Grass (Sisyrinchium mucronatum)

Slender Blue-eyed Grass derives its common name from its very slender stem.


Range map for Slender Blue-eyed Grass (Sisyrinchium mucronatum)

PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.

(Range map provided courtesy of the USDA website and is displayed here in accordance with their Policies)