BibTeX

@misc{IPNI2004,
  author    = {IPNI},
  publisher = {The Royal Botanic Gardens, Kew, The Harvard University Herbaria, & the Australian National Herbarium},
  title     = {The International Plant Names Index},
  url       = {https://www.ipni.org},
  year      = {2004},
  sections  = {None}
}