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Western marbleseed

Also known as: false gromwell

Onosmodium molle Michx.

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Western marbleseed
Western marbleseed flowers
Western marbleseed
Western marbleseed
Western marbleseed flowers
Western marble seed leaves
Western marbleseed
Western marbleseed
Western marbleseed
Western marbleseed
Western marbleseed
Western marbleseed habit

Morphology

Stem
Erect, several to many, branched above, covered with stiff white hairs.
Leaves
Alternate, simple, sessile, lanceolate to ovate, 2 to 5 inches long, .5 to 1.25 inch wide, stiff-hairy, 5-7 prominent veins beneath; basal leaves usually absent at flowering.
Inflorescence
Racemes, coiled, terminal.
Flower
5-parted, sessile; calyces 5-lobed, sepals narrowly lanceolate, stiff-hairy; corollas 5-lobed, narrowly tube-shaped, about 1/4 to 1/2 inch long, dull white, lobes converging, hairy; stamens 5; style thread-like, extending beyond tips of corollas.
Fruit
1-4 nutlets, oval, hard, whitish, 1-seeded.

Ecology

Habitat
Dry, sandy or gravelly prairies, pastures and open woods, most abundant on hillsides in alkaline soils.
Distribution
Throughout except southwest corner of Kansas.

Practical Information

Uses
Some Great Plains tribes mixed crushed leaves and stems of western marbleseed with grease and used it as a rub to treat numbness and rheumatism.

Additional Notes

Comments

Western marbleseed has grayish green foliage. The name "marbleseed" comes from the hard, shiny, white nutlets that it produces.

Quick Facts
Plant Type
Wildflower
Family
Boraginaceae - Borage Family
Life Span
Perennial
Height
18-48 inches
Last Updated
2021-08-27
Color Groups
White, Green & Greenish White Wildflowers
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: May, June, July