Althaea

noun

1. A genus of plants, of the natural order Malvaceæ, including the hollyhock, A. rosea, and the marsh-mallow, A. officinalis.
2. A common name of the Hibiscus Syriacus, cultivated in gardens. Also called shrubby althæa and rose of Sharon.
3. A genus of plants of the Mallow family. It includes the officinal marsh mallow, and the garden hollyhocks.
4. An ornamental shrub (Hibiscus Syriacus) of the Mallow family.
5. any of various plants of the genus Althaea; similar to but having smaller flowers than genus Alcea