*1: Gulval Carn, 1840,
WC (OXF) (Paton 1969a: 707).
*2: Rocks in Rocky
Valley, Tintagel, Aug. 1960, JAP & JA
(BBSUK) (Paton 1961: 157, 1969a:
Habitat notes from Cornwall are as follows. On
serpentinite rock of S.-facing outcrops within a kilometre of
coast, unshaded or lightly shaded, growing appressed to
vertical or steep rock. Serpentinite and slate rock high on
exposed sea-cliffs, unshaded and part shaded inside cracks
(once with Cololejeunea
minutissima). Sloping granitic rocks on upper parts of
sea-cliffs and on slopes above coast, unshaded to lightly
shaded. No records from walls.
One record cper: 11.