Bryophytes include many forms of plants that are commonly referred to as "mosses and liverworts". As a group they are devoid of specialized tissues that are found in vascular plants. Also the dominant plant is a generation called the gametophyte. This plant originates from a spore and produces gametes. Ecologically, the mosses and liverworts are important as they help hold moisture in the habitat where they are found. Habitats range from alpine summits to caves to the Arctic. Much of the green color on the barks of trees are various kinds of mosses and liverworts. Dr. Paul L. Redfearn Jr., founder of the Ozarks Regional Herbarium, is one of the world's experts on Bryophytes. A listing of research manuscripts documents, and books can be obtained by referring to the section Studies by Herbarium Staff and Faculty

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