Caucasian kindjal

[ariel]

And just to extend: Paubrasilia is sometimes referred to as Pernambuco (tree).
Here is a similar story but in reverse: the tree got its name from the state of Pernambuco, but the origin of the state name is uncertain: either from a native (extinct) Indian language “ long river” ( Parana river, that is indeed long), or from Portuguese "Boca de Fernão", an old name for the Santa Cruz channel.

One thing I love this Forum for is the urge it gives to digress into surprising directions and learn totally useless things:-)