Quenya 

lepetta

lepetta

lepetta noun, a hard-wood tree growing in Gondor (Ithilien), Sindarin lebethron (PE17:89)

lepetta

noun. Gondorian hardwood

Quenya name for the S. lebethron tree appearing in an undated note likely from the late 1960s, so called “probably because its leaves (like chestnut) [were] shaped like a fingered hand” (PE17/89). As such it was likely derived from √LEP, the basis for finger-words.