sessile

pohjaan kiinnittynyt

varreton puhekieltä permanently attached to a substrate; not free to move about; “an attached oyster”
puhekieltä attached directly by the base; not having an intervene intervening stalk; stalkless.
(RQ:Schuster Hepaticae V)

The sporophyte foot is also characteristic: it is very broad and more or less lenticular or disciform, as broad or broader than the calyptra stalk(..), and is sessile on the calyptra base(..)