@misc{indiciae027edd2ce1cd,
  title = {Subspecific variation in the widespread burl-forming Arctostaphylos glandulosa},
  author = {Jon E. Keeley and Michael C. Vasey and V. Thomas Parker},
  year = {2007},
  doi = {10.3120/0024-9637(2007)54[42:svitwb]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70190540},
  note = {Source identifier: 70190540}
}