Linum rigidum Pursh
Stiffstem Flax, Large-flower Yellow Flax, Yellow Flax
Linaceae (Flax Family)
USDA Symbol: liri
Yellow flax is common on the prairies of the Southwest. It is usually 8-20 inches tall, depending on growing conditions. It has a single blossom, 1-1 1/2 inches across, on each of its few branches. Leaves are alternate, narrow, and 1/3 inch long. The 5 yellow to orange petals have deep red centers from which grow the 5 stamens with yellow anthers. Each plant bears many flowers but usually only a few each day.
From the Image Gallery
Plant CharacteristicsDuration: Annual
Fruit Type: Capsule
Size Notes: Up to about 20 inches tall.
Bloom InformationBloom Color: Red , Orange , Yellow
Bloom Time: May , Jun , Jul , Aug , Sep
DistributionUSA: AR , CO , IA , IL , KS , MN , MO , MT , ND , NE , NM , OK , SD , TX , WI , WY
Native Distribution: W. MN & Man. to Alt., s. to n. Mex.
Native Habitat: Upland prairies
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
Soil Description: Sandy or gravelly soils.
Conditions Comments: Plant displays 2 or 3 open blooms at a time, eventually producing up to a dozen flowers. Found on sandy and light soils in grassland habitat. Height variable from 6" to just over 12", spread from 4" to 10".
BenefitWarning: Animals have been poisoned, sometimes fatally, by eating plants in the Linum genus. Humans should generally avoid ingesting plants that are toxic to animals.
Conspicuous Flowers: yes
Interesting Foliage: yes
Deer Resistant: Minimal
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Lady Bird Johnson Wildflower Center - Austin, TX
Sibley Nature Center - Midland, TX
Stengl Biological Research Station - Smithville, TX
Herbarium Specimen(s)NPSOT 0391 Collected May 19, 1993 in Comal County by Mary Beth White
BibliographyBibref 946 - Gardening with Prairie Plants: How to Create Beautiful Native Landscapes (2002) Wasowski, Sally
Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
Bibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
Search More Titles in Bibliography
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Linum rigidum in USDA Plants
FNA: Find Linum rigidum in the Flora of North America (if available)
Google: Search Google for Linum rigidum
MetadataRecord Modified: 2023-02-16
Research By: TWC Staff