This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Moss People (Continental Germanic mythology)
The moss people or moss folk also referred to as the wood people or wood folk or forest folk , are a class of fairy folk, variously compared to dwarfs, elves, or spirits, described in German folklore as having an intimate connection to trees and the forest. The moss people are sometimes described as similar to dwarfs, being the same size as children, but "grey and old-looking, hairy, and clad in moss."
Sometimes, moss folk are also bigger. In other descriptions they are said to be pretty. In Saxony, the Holzweibchen ("little wood woman"), also called Buschweibchen ("little shrub woman"), appears as a small shrivelled old woman with a wrinkly face, carrying wood in a basket on its back or brushwood in its apron, walking around propped on a stick or cane, or sitting in a shrub spinning or knitting at crossroads.