Flax have been domesticated just once from the wild species "Linum bienne", called pale flax. Several other species in the genus "Linum" are similar in appearance to "L. usitatissimum", cultivated flax, including some that have similar blue flowers, and others with white, yellow, or red flowers. Some of these are perennial plants, unlike "L. usitatissimum", which is an annual plant. Cultivated flax plants grow to tall, with slender stems. The leaves are glaucous green, slender lanceolate, 20–40 mm long, and 3 mm broad. The flowers are pure pale blue, 15–25 mm in diameter, with five petals. The fruit is a round,
The Pot of Gold and Other Stories eldest daughter Flax Flower takes on the most responsibility. Father Flower and Flax are very close, and he often confides in her that he sometimes wishes he had for more to offer for his family. While working on the flowers one day, a rainstorm comes through and produces the most beautiful rainbow. Father Flower tells Flax that he wishes he could find the pot of gold at the end of the rainbow. Flax, having never heard of this before, listens while her father tells her of the pot of gold and recites to her the poem he has made about