@misc{indiciae722fff1699f1,
  title = {Invasion in a diversity hotspot: Exotic cover and native richness in the Californian serpentine flora},
  author = {S. Harrison and J.B. Grace and K.F. Davies and H.D. Safford and J.H. Viers},
  year = {2006},
  doi = {10.1890/05-0778},
  url = {https://pubs.usgs.gov/publication/70030667},
  note = {Source identifier: 70030667}
}