[1]
Lughadha, E.N., Govaerts, R., Belyaeva, I., Black, N., Lindon, H., Allkin, R., Magill, R.E. and Nicolson, N. 2016.

Counting counts: revised estimates of numbers of accepted species of flowering plants, seed plants, vascular plants and land plants with a review of other recent estimates

. Phytotaxa. 272, 1 (Aug. 2016), 82–88. DOI:https://doi.org/10.11646/phytotaxa.272.1.5.