What is "cercocarpus betuloides"

Hardtack \Hard"tack`\ or Hard-tack \Hard"-tack`\(h[aum]rd"t[a^]k`), n.

1. A name given by soldiers and sailors to a kind of unleavened hard biscuit or sea bread. Called also pilot biscuit, pilot bread, ship biscuit and ship bread

2. Any of several mahogany trees, esp. the Cercocarpus betuloides.
   --MW10

Cercocarpus betuloides is a shrub or small tree in the ( rose family). Its common names include Mountain mahogany and Birch leaf mountain mahogany The common name "mahogany" comes from the hardness and color of the wood, although the genus is not a true mahogany.