@misc{indiciae81230affb9d4,
  title = {Lichens promote flowering Opuntia fragilis in west-central Wisconsin},
  author = {J. P. Bennett and C.R. Bornar and C.A. Harrington},
  year = {2003},
  doi = {10.1674/0003-0031(2003)150[0221:lpfoof]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/1003781},
  note = {Source identifier: 1003781}
}