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Prairie irid

Also known as: prairie celestial lily, Prairie iris

Nemastylis geminiflora Nutt.

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Prairie irid
Prairie irid flower
Prairie irid leaf
Prairie irid

Morphology

Stem
Erect, sturdy, round; from spherical bulb, .6 to 1.2 inch in diameter, dark, scaly.
Leaves
1-4, grass-like, linear to sword-shaped, 5-18 inches long, 1/8 to 2/5 inch wide, folded together lengthwise, prominent ribs and furrows, tip pointed, 1 blade often exceeding inflorescence.
Inflorescence
1-3 flowers, terminal on slender ascending branches; spathe bracts 2, nearly equal.
Flower
1.6 to 2.8 inches across; perianth segments 6, similar, in 2 series, spreading, .8 to 1.4 inch long, blue, base lighter; stamens 3, opposite inner perianth segments, anthers oblong, 2/5 to 1/2 inch long, filaments short, thickened, united at base; styles 3, each divided into 2 threadlike branches, stigmas tiny, spherical.
Fruit
Capsule, egg-shaped, .6 to 1 inch long, .4 to .6 inch wide; seeds numerous, 1/6 inch long, rust-colored.

Ecology

Habitat
Moist to dry prairies and open oak woods; limestone or chalk soils.
Distribution
Southeast 1/4 of Kansas.

Additional Notes

Comments

Each flower lasts only a day. The flowers usually open in the morning and close before sunset. The perianth segments curl by mid-afternoon.

Quick Facts
Plant Type
Wildflower
Family
Iridaceae - Iris Family
Life Span
Perennial
Height
5-20 inches
Last Updated
2007-11-07
Color Groups
Blue, Purple, Lavender & Violet Wildflowers
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: April, May