Liverworts We have now officially moved into Kingdom Plantae by just about anyone's taxonomy. We have also moved into terrestrial plants. These characteristics are common for ALL members of Kingdom Plantae.
All members have a sporic life cycle that is oogamous.
In some ways, then, these bryophytes are very similar to each other and fundamentally similar to flowering plants. The small green plant you find as a moss or a liverwort is the haploid gametophyte. The gametophyte plant body is called a thallus, which means that it lacks xylem and phloem and therefore does not have true stem, true leaf or true root. The plant body may have conducting tissue and some of this has a familiar look. Because the details are not precisely xylem and phloem, these plants are referred to as non-vascular.