Secale is a genus of the Triticeae tribe containing grasses that are related to barley (Hordeum) and wheat (Triticum). The genus includes cultivated species such as rye (Secale cereale) as well as weedy and wild rye species. The most well known species of the genus is the cultivated rye, S. cereale, which is grown as a grain and forage crop. Wild and weedy rye species help provide a huge gene pool that can be used for improvement of the cultivated rye.