Liverwort

From liver + Old English wort ("plant"), from the belief that some species looked like livers and were useful for treating the liver medicinally.

Full definition of liverwort

(plural liverworts)

A type of bryophyte (includes mosses, liverworts, and hornworts) with a leafy stem or leafless thallus characterized by a dominant gametophyte stage and a lack of stomata on the sporophyte stage of the life cycle.

1929 â€” Shiv Ram Kashyap, Liverworts of the Western Himalayas and the Panjab Plain, vol. I, p. 1.The liverworts are either thallose, without any differentiation into stem and leaves, or leafy.
1985 â€” W. B. Schofield, Introduction to Bryology, p. 135Since the thallus of some liverworts resembled a liver, such plants were considered useful in making a concoction that would aid in curing liver ailments. Hence the name "liver-plant," or liverwort. Unfortunately, there is no evidence that liverworts possess curative properties.
2000 â€” Barbara Crandall-Stotler & Raymond E. Stotler, "Morphology and classification of the Marchantiophyta". pages 21-70 in A. Jonathan Shaw & Bernard Goffinet (Eds.), Bryophyte Biology, page 21.Like other bryophytes, liverworts are small, herbaceous plants of terrestrial ecosystems.