*vc1: W. of Lanner, 1976, JAP (BBSUK) (Paton 1977a: 448, Corley 1978:
12).
*vc2: Trelawne near Looe, undated, FR (BM) (Paton 1977a:
448, Corley 1978: 12).
See notes on M.
violacea
.
Commonest as epiphyte, forming patches on trunks
and branches in groves of trees, woodland and scrub. Recorded
on Ash, Beech, Downy Birch, Blackthorn, Broom (once), Elder,
elms, Gorse (commonly, e.g. in scrub, edge of scrub, old
bushes on heathland), Grey Willow, Hazel, Holly (once), oaks,
hybrid poplars, Lawson's Cypress (once), Sitka Spruce (once),
Sycamore, Traveller's Joy (once), Wild Privet (once).
Associates include Frullania dilatata, Metzgeria violacea, Microlejeunea ulicina,
Orthotrichum
diaphanum, Orthotrichum
pulchellum, Ulota
bruchii, Ulota
crispa, Zygodon
conoideus.
Other habitat notes from Cornwall are as follows.
Several records from scrub on slopes above sea-cliffs (on
Blackthorn) and on streamside in valley near exposed coast on
Grey Willow. Several strong patches on vertical and steep
parts of granitic boulders part shaded by Grey Willow scrub,
in hollow on old china clay spoil heap. Patch on granitic
boulder under edge of woodland (base of china clay spoil
bank); on shaded granitic boulders near river edge. Several
patches seen on granitic rock of tors. Unusual records include
one of it growing in plenty on old cast-iron of pipe under
trees near river; once growing epiphytically on stems of old
Polytrichastrum
formosum plants on a laneside bank.
Only identified c. gemmae, which common. Not seen
c.fr.
