Linaceae is a plant family consisting of about 300 species. It includes both annual and perennial herbs, shrubs, and trees. Some common members of this family include flax, tansy, and Siberian gromwell. synonyms for Linaceae include Flax family, Linum family, and Flaxseed family. This family is known for its oilseed crops, as flaxseeds produce a high-quality oil that is commonly used in cooking and as a nutritional supplement. Linaceae plants are also used for medicinal purposes, as well as for their decorative value in landscaping. Overall, Linaceae is an important family of plants that have significant value in various fields.