Notes on a new plant to Tasmania - Riccia natans

Abstract

The small plant referred to this genus is perhaps the most simple of all the Hepaticae. It is found floating on water, and may be passed by as a Lemna if not closely observed. The fronds are fleshly and inversely heart-shaped, being clothed beneath and at the edges with long, pendant, purple fimbrice, these may be observed on the stage of one of the microscopes on the table. The plant introduces a new genus to Tasmania, and I fail to find any previous record of R. natans being observed in Australasia, with the exception of one locality, and that is Lake Roto-a-kiwa, North Island, New Zealand