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
♦ 3Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P.
ScaleNet 4 November 2009
♦ 4"FLORAL TRAITS OF PLANTS VISITED BY THE BEE HUMMINGBIRD (MELLISUGA HELENAE)", Bo Dalsgaard, Daniel W. Carstensen, Arturo Kirkconnell, Ana M. Martín González, Orestes Martínez García, Allan Timmermann, & William J. Sutherland, ORNITOLOGIA NEOTROPICAL 23: 143–149, 2012