Topic summary
Nutlet
Extracted from the Wikipedia article Nut (fruit).
Definition
A small nut may be called a "nutlet" (formerly called a nucule, a term otherwise referring to the oogonium of stoneworts). In botany, the term "nutlet" can be used to describe a pyrena or pyrene, which is a seed covered by a stony layer, such as the kernel of a drupe. Walnuts and hickories, including pecans, (Juglandaceae) have fruit that are difficult to classify. They are considered to be nuts under some definitions, including by the authoritative Angiosperm Phylogeny Group, but are also referred to as drupaceous nuts by some others.