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,
Flax solomoni are light grey. The underside of the forewings is unicolourous brown and the underside of the hindwings is grey with a discal spot. Flax solomoni Flax solomoni is a moth of the Micronoctuidae family. It is found on the Solomon Islands (it was described from north-western Guadalcanal). The wingspan is about 10 mm. The labial palps, head, patagia, basal part of tegulae and thorax are black brown. The forewings (including fringes) are brown, with blackish-brown subterminal and terminal areas. The base of the costa and the medial area are also blackish-brown with a black dot in the inner lower area