Table 1. Crosstabulation of the taxonomic status of the species of Treemendous.Trees from the three backbones of World Flora Online (WFO), The World Checklist of Vascular Plants (WCVP) and the Global Biodiversity Information Facility (GBIF).

In each database, a species name can be present and considered as accepted or not accepted or missing. A total of 124,044 species are accepted in all three databases. Note: The total number of accepted species in each database is higher than the estimated global number of tree species because some genera might contain both tree and non-tree species. 140 species are absent from these three backbones, but present in BGCI (Botanic Gardens Conservation International), which considers all species as being accepted.

		GBIF	Accepted	Not accepted	(Missing)
WFO	WCVP
Accepted	Accepted		101,348	1,710	25,934
	Not Accepted		2,275	837	3,433
	(Missing)		1,830	382	2,635
Not Accepted	Accepted		739	288	1,020
	Not Accepted		5,905	39,332	108,555
	(Missing)		1,228	5,433	17,406
(Missing)	Accepted		6,249	167	3,371
	Not Accepted		1,182	2,914	14,174
	(Missing)		18,040	37,252	0