11. Professor Proskauer's thesis research was concerned with the biology and liverworts . 12. There are four species of fungi and two liverworts named after Bruce Fuhrer. 13. His botanical researches were mainly among the mosses, liverworts , and lichens. 14. She offers him a bunch of liverwort flowers which she just has gathered. 15. It shows some liverwort characters, and is hesitantly assigned to this group. 16. There are various varieties of mosses and liverworts recorded. 17. Delicate liverwort fungus grows perpendicularly from tree trunks. 18. They found that only liverworts , like aquatic green algae, lacked all three. 19. In its original use the term signified mosses, liverworts as well as lichens. 20. More primitive plants, such as mosses and liverworts attach themselves to solid objects.