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Guarea spp. of the family Meliaceae, the mahogany family. The primary species appear to be Guarea cedrata and G. thompsonii but there a dozen more (see discussion below)
A mahogany-related wood from both Africa and South America. Several South American species of the genus Guarea and several African species are sold under the common names guarea and bosse and I do not know the differences, if any, among them. All together, there are easily a dozen species in the genus Guarea that are sold as either bosse or guarea OR BOTH --- primary dealers certainly know whether their wood comes from South America or Africa, but secondary dealers may be less sure and may not even care, so I consider the separation of the Guarea species into guarea and Bosse to be suspect as far as common availability goes. I certainly have no faith that the separation between the two on this web site is entirely accurate, although I DO pay attention to where I get the pics and what they say (but this relies on the knowledge of the vendors and that ranges from what I believe to be quite reliable, to highly suspect).
The plank directly below (from which the left pic here was cropped) was out in my garage for many years and when I cut it recently to sell a chunk, I noticed that it had darkened considerably. The color now is shown in the right pic.
both sides of a sample plank of bosse (guarea) / Guarea spp. --- HUGE enlargements are present.
end grain and end grain closeup of the piece directly above
END GRAIN UPDATE from directly above
a small plank sold to me as guarea
one side and end grain of a small turning stick sold to me as guarea
end grain closeup and END GRAIN UPDATE of the piece directly above. When I sanded for the update, one side got done properly and the other didn't so I rotated the piece for the pic so that everything shown is good clear fine grain detail.
a couple of small thins I cut for a project and the same two pieces moistened with water to show how nicely the color comes out
planks listed as bosse
planks listed as bosse / Guarea cedrata
planks listed as guarea
planks, listed as bosse, that have been moistened for the pics
flat cut bosse veneer
quartersawn figured bosse veneer
veneer listed as bosse / Guarea cedrato
veneer, all from the same vendor, that may or may not be bosse (or guarea or who knows what; it was listed as bosse)
bosse burl veneer
bosse pomelle veneer
bosse crotch veneer
both sides of a bosse plank and a closeup --- this is from the BogusColorVendor so the color is very suspect