*1: Trunks of coppiced
oak, wood E. of Calenick, Truro,
Dec. 1960, JAP (BBSUK) (Warburg 1961: 167,
Paton 1969a: 742).
*2: Dunmere Wood,
Bodmin, 1891, RVT (B) (Paton 1969a:
See notes under U. crispa s. str.
Notes on habitats in C&S are as follows.
Usually grows as epiphyte, on bark of trunks, branches and
twigs of varied trees and shrubs, in woodlands, scrub, carrs,
or less often small groves or isolated trees. Commonly grows
high above ground, especially in sheltered locations. Many
records from Grey Willow (the commonest phorophyte), Hazel,
Sessile Oak, Sycamore; moderate numbers from Ash, Blackthorn,
Elder, elms; few each on Alder, Beech, Bramble (dead stems in
sheltered site), Gorse (in tall scrub), Hawthorn, Honeysuckle
(on an old stem), larch (twigs), Rhododendron, Turkey Oak.
Once each on Cortaderia, Picea abies (dead
contorta and on Styrax hemslyana tree
at Trengwainton Garden. One record of a
little on node of a stem in a clump of bamboos (Carwinion)
probably referable to this form rather than U. crispa s. str. Single record on
silted bark within flood-zone on riverside Alder. Also
occasionally in upper part of inundation-zone of reservoirs.
It prefers horizontal or inclined branches and trunks to
vertical ones and is commonest in sheltered places; occurs on
twigs in humid sites. Although often in moderate shade
(especially in summer), it avoids really heavily shaded sites.
Commonly occurs close to U. crispa s. str. (q.v.), even on the same
branch, but overall tends to be commoner than that species. No
differences were apparent in their choices of host trees or
their occurrence in woodland or scrub sites of differing ages
or ecological types. Associates recorded commonly include Frullania dilatata, Hypnum andoi, Hypnum cupressiforme
ulicina, Orthotrichum affine,
Ulota crispa, Ulota
Three records of small amounts on granitic rocks in
sheltered sites under trees or Grey Willow. Single record
(patch cfr) on exposed granite boulder on slope at edge of
working china clay quarry.
Commonly c.fr. [only recorded when mature or old
capsules present]: capsules immature 1-12; dehiscing 1-4, [5,
8, exceptional], 9-12 (mainly 10-3); dehisced [old 4, 7]