What is a widely dispersed genus of shrubs and trees, usually with aromatic foliage. It includes the bayberry or wax myrtle, the sweet gale, and the North American sweet fern, so called called?

myrica — A widely dispersed genus of shrubs and trees, usually with aromatic foliage. It includes the bayberry or wax myrtle, the sweet gale, and the North American sweet fern, so called. (Webster's 1913.)