The Malvaceae or mallow family is a very complex one which is still in the process of being well defined. The way it is viewed by the two main schools are in a restricted monophylletic sense and in a broader sense. In the former, it is considered to have about 115 genera amd 1500 species, in the latter about 250 genera including lindens, kapoks, baobabs, durians, balsa, cacao and others. The family most closely related to the Malvaceae is the Bombacaceae, which is the family of the silk-floss trees. A typical mallow has five showy petals and numerous stamens fused into a tube around the pistil. The best known of the shrubby genera are Malva, Hibiscus, Abutilon, Lavatera and Althaea, while cotton (Gossypium) and okra (Abelmoschus) are two important agricultural members. The family also contains some trees, and is very widespread.