*1: St Mawgan near
Newquay, 1961, JAP (BBSUK) (Paton 1969a:
726). [Earlier report (Sancreed, in Holmes 1906) not supported
by specimen: Paton 1969a: 726].
*2: St Minver, 1878,
RVT (B) (Paton 1969a:
726).
Uncommon. Forms patches or low lawns. Notes on
habitats in Cornwall are as follows. Grows on basic masonry or
rocks, with substrates recorded as mortared stone walls (1),
old mortar (3), old concrete (7), slaty rock (2), serpentinite
in wall (1) and hard stone (1), on horizontal to vertical
surfaces. Mainly found on old walls, including roadside walls,
a church wall, walls near rivers and streams, walls of a
disused leat, Bude Canal and a bridge, also on horizontal
masonry near bases of walls (including those of a chapel),
beside drainage channels and on damp steps in a churchyard.
Mainly in humid, sheltered locations, two sites being within
flood-zones of a stream and a river, another near a lake, the
sites varying from almost unshaded to moderately shaded by
trees or inside deciduous woodland.
A few foliar gemmae seen on specimen from near
Trago Mills. Not seen c.fr.
