Mountain mahogany is a great bow wood. It is near impossible to find a stave suitable for a bow yet it was a favored bow ni the great basin. Bow fragments have been found in dry caves in Utah and Nevada. There is for sure 1 and probably 2- 1/2 bows of it in the Natural history museum in Salt Lake City. More recently it was a favored wood of the Ute, Paiute, Apache, Navajo and other southwest tribes.
because of this I needed to try it. Spent a few hours looking for some in a place where many grow. Made a couple self bows 35" long or so and a 46" sinew backed bow from a stave full of little knots. Shot it for a while at 23" draw. A few shots at 24" and she exploded. It may have been favored for early bows as you do not need to follow a ring. You can cut through grain and twist and even ignore small knots. If you are lucky enough to find a nice stave it shoots quite fast too.