Attributes / relations provided by
♦ 1i-Tree Species v. 4.0, developed by the USDA Forest Service's Northern Research Station and SUNY-ESF using the Horticopia, Inc. plant database.
♦ 2USDA Plants Database, U. S. Department of Agriculture
♦ 3Jérôme Chave, Helene C. Muller-Landau, Timothy R. Baker, Tomás A. Easdale, Hans ter Steege, Campbell O. Webb, 2006.
Regional and phylogenetic variation of wood density across 2,456 neotropical tree species. Ecological Applications 16(6), 2356 - 2367
♦ 4Kattge, J. et al. (2011b)
TRY - a global database of plant traits Global Change Biology 17:2905-2935