Other important orchids include the Paphiopedilum and Phragmipedium families, which have fused sepals similar to a bag, that attract insects who fall into its flower.
Homeotic mutants in angiosperms are thought to be rare in the wild: in the annual plant Clarkia, (Onagraceae), homeotic mutants are known where the petals are replaced by a second whorl of sepal like organs, originating via a mutation governed by a single recessive gene.