Sisyrinchium angustifolium, commonly known as Stout blue-eyed grass or simply blue-eyed grass, is a herbaceous

Herbaceous plant

A herbaceous plant is a plant that has leaves and stems that die down at the end of the growing season to the soil level. They have no persistent woody stem above ground...

 perennial

Perennial plant

A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. The term is sometimes misused by commercial gardeners or horticulturalists to describe only herbaceous perennials...

 growing from rhizome

Rhizome

In botany and dendrology, a rhizome is a characteristically horizontal stem of a plant that is usually found underground, often sending out roots and shoots from its nodes...

s, native to moist meadow

Meadow

A meadow is a field vegetated primarily by grass and other non-woody plants . The term is from Old English mædwe. In agriculture a meadow is grassland which is not grazed by domestic livestock but rather allowed to grow unchecked in order to make hay...

 and open woodland

Woodland

Ecologically, a woodland is a low-density forest forming open habitats with plenty of sunlight and limited shade. Woodlands may support an understory of shrubs and herbaceous plants including grasses. Woodland may form a transition to shrubland under drier conditions or during early stages of...

. It is the most common blue-eyed grass of the eastern United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

Height: 15–50 cm (5.9–19.7 in). Stem: broadly winged, 2–4 mm (0.078740157480315–0.15748031496063 in) wide. Leaves: 2–6 mm (0.078740157480315–0.236220472440945 in) wide. Tepal

Tepal

Tepals are elements of the perianth, or outer part of a flower, which include the petals or sepals. The term tepal is more often applied specifically when all segments of the perianth are of similar shape and color, or undifferentiated, which is called perigone...

s: 6, blue, 7–10 mm (0.275590551181102–0.393700787401575 in).