STIFFSTEM FLAX
File Size: 59 KB
 
Linum rigidum  Pursh  var. rigidum 
Barber County, Kansas
Annual
Height: 8-20 inches
Family: Linaceae - Flax Family
Flowering Period:   May, June, July
Stems: Erect, stiff, ascending branches near top.
Leaves: Alternate, stiff, linear to linear-lanceolate, .4 to 1.2 inches long, about .1 inch wide; tips pointed to tapering pointed; margins usually entire.
Inflorescences: Panicle, open, terminal on each branch.
Flowers: .5 to .75 inch across; sepals lanceolate, margins with minute, gland-tipped teeth; petals 5, yellow with brown to red coloration near base; stamens 5; pistil 1, with 5 segments.
Fruits: Capsules, elliptic, thin-walled, 5-segmented, each segment 2-seeded; seeds small, brownish.
Habitat: Prairies, disturbed areas and open, wooded hillsides; sandy soils.
Distribution: West 1/2 of Kansas.
Toxicity: Stiffstem flax is said to contain saponin, which can cause livestock poisoning, particularly in sheep.
Comments: The petals usually drop after one or two days.
 Closely related to Berlandier's flax .

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