Bazzania is a genus of leafy liverworts in the family Lepidoziaceae, within the order Jungermanniales (class Marchantiopsida, phylum Marchantiophyta). The genus was named in honour of Matteo Bazzani (1674–1749), an Italian botanist and professor of Anatomy at the University of Bologna.
As of 2024, approximately 258 species are accepted in Bazzania, making it one of the larger liverwort genera. Liverworts in this genus are leafy (foliose) rather than thallose: the shoots bear three rows of leaves — two rows of lateral leaves in a single plane and one row of smaller ventral leaves (underleaves). The leaves are typically lobed or dissected at their tips, a character that helps distinguish Bazzania from allied genera. Among species in the genus, Bazzania trilobata (the greater whipwort or threelobed bazzania) is particularly well-studied and is one of the largest leafy liverworts known.
Bazzania species are found across temperate and tropical regions worldwide, colonising humid forests, rocky outcrops, stream banks, and rotting wood. Members of the family Lepidoziaceae are commonly encountered in moist, shaded habitats in both the Northern and Southern Hemispheres.
Etymology
The genus name Bazzania honours Matteo Bazzani (1674–1749), an Italian botanist and professor of Anatomy at the University of Bologna.
Distribution
Bazzania species occur in temperate and tropical regions worldwide. The well-known Bazzania trilobata is distributed across the Northern Hemisphere temperate zone, and the genus as a whole is recorded from Europe, the Americas, Asia, and Australasia.
Ecology
Bazzania liverworts grow in moist, shaded terrestrial habitats including humid forests, stream banks, rotting logs, and rocky outcrops. Like all leafy liverworts, they require persistently humid conditions and are sensitive indicators of forest microclimate and air quality.
