Newton County School System. The Newton County Schools System is a public school district in Newton County, Georgia, United States, based in Covington. It serves the communities of Covington, Mansfield, Newborn, Oxford, Porterdale, and Social Circle. 1 Schools 1.1 Elementary schools.
Liverworts are primitive nonvascular plants, perhaps the most primitive true plants still in existence. There are two types. In thallose liverworts, the plant body (thallus) consists of flattened masses of cells that look leafy but show little differentiation into different cell types.oth types of liverworts are small, in the range of a few millimeters to a few centimeters, and easily overlooked. Some species, however, are conspicuous members of the forest-floor flora and may be much easier to find. One of these is Marchantia polymorpha. a thallose species.
Bryophytes, the mosses, liverworts and hornworts, are the most primitive terrestrial plants surviving today. Many fossils of plants long extinct bear features similar to the modern Bryophytes, particularly, their lack of vascular systems. Based upon genetic analysis, it seems that liverworts are the most primitive of the three kinds, and mosses the closest relatives to vascular plants. Bryophytes are the second largest group of land plants in the world today with over 20,000 species.