Albizia spp. of the family Fabaceae. Native to Africa. There are almost 2 dozen species of of the genus Albizia that have the word albizia as all or part of one or more of their common names and I have no idea which of them are represented on this page except as specifically noted.
Albizia species that have their own page on this site include lebbeck (Albizia lebbeck) and gogo (Albizia saponaria)
my samples --- color is accurate:
both sides of a sample plank of flatcrown / Albizia adianthifolia (this speces is one of the many albizia species that is aka albizia)
end grain and end grain closeup of the piece directly above
veneer
web pics:
plank
plank with wet and dry sections
plank listed as Albizia ferruginea
pen blanks listed as flat crown / Albizia adianthifolia
veneer --- the web pic of the lot from which my own samples were taken --- the color on my pics is accurate; this pic is a typical dealer misrepresentation, and leads me to believe that the colors on ALL of the web-pics below are similarly incorrect.
veneer, all from the same vendor and all with suspect colors (almost certainly too much pink)