Little White Flax, Small-flowered White Flax: Hesperolinon micranthum (Synonymn: Linum micranthum) -
Narrow-leaved Flax, Pale Flax: Linum bienne (Synonym: Linum angustifolium) -
Prairie Flax, Western Blue Flax, Wild Blue Flax: Linum lewisii var. lewisii (Synonyms: Linum perenne ssp. lewisii, Linum perenne var. lewisii) -
Blue Flax, Blue Garden Flax, Perennial Flax: Linum perenne (Synonym: Linum perenne var. perenne) -
Common Flax, Linseed: Linum usitatissimum (Synonym: Linum humile) -
Northwestern Yellow Flax: Sclerolinon digynum (Synonym: Linum digynum) -