Four Oregon plants and one butterfly are among 33 species currently protected under the federal Endangered Species Act which the government said it will review for a possible change in status.

The U.S. Fish and Wildlife Service is taking a look at each of the five to determine if the species warrants less protection, or else removal from the list.

The four Oregon plants include the Willamette daisy, Kincaids lupine, Bradshaws desert parsley and Nelsons checkermallow. The Fenders blue butterfly is also under review.

According to the Endangered Species Act, the classification of species receiving federal protection need to be reviewed every five years. Because of tight finances, the agency largely neglected to do that, until a lawsuit filed by the timber industry regarding the status of the spotted owl.

The lawsuit, settled in 2003, was a wake-up call, said Phil Carroll, a spokesman for the Fish and Wildlife Service.