*1: On thin soil in
crevice on top of footbridge of granitic rock, low above water
of stream, unshaded, Burras, SW63, 1994, DTH 94-438
(BBSUK, DTH) (Blockeel 1996:
45).
*2: Stone in stream
beside ford, Hustyn Mill near St Breock, Wadebridge, May 1962,
JAP (BBSUK) (Warburg 1963b: 496, Paton 1969a:
725).
This common moss appears to have been previously
overlooked in Cornwall,
probably because it is rather nondescript, non-fertile, often
small when in trampled places, and it mainly grows in rather
mundane or unpromising habitats. However, it may also have
spread or increased in recent decades.
Grows as low lawns, sometimes covering several
square metres, or in smaller amounts as patches or intermixed
with other low mosses. Notes on habitats in Cornwall are as
follows. Mostly on firm horizontal surfaces where shallow
water tends to stand or flow during or after rain and the
substrate is neutral to basic. Frequently on concrete or
rather old tarmac on track or road edges (or middles),
pavements, and paths (e.g. in churchyards), unsheltered and
unshaded or more often sheltered and lightly or partly shaded.
Fewer records from low walls, low masonry near churches,
bridge abutments, concrete paths by a river, on disused
railway station platform, edges of old runways on disused
airfield, and in crevice of granite footbridge. Also occurs on
compressed soil of old tracks, path edges, lay-bys, gravel car
parks, among damp soil/masonry heaps (e.g. on old mining
ground), as colonist on soil heaps and other disturbed soil
(occasionally in plenty) and once on open soil on coastal
headland. Once found on concrete of weir beside stream (in its
flood-zone), once on silted base of tree in flood-zone beside
R. Tamar, once on damp clay bank near Bude Canal, once on old
rotting timber on disused railway track. Once in quantity on
vertical surfaces of mortared-stone wall shaded at north side
of church, but adjacent to larger populations on horizontal
concrete. Common associates are Bryum argenteum, Bryum dichotomum, Bryum capillare, Ceratodon purpureus,
Didymodon
insulanus; others recorded are Cirriphyllum
piliferum, Dialytrichia
mucronata, Dichodontium pellucidum
s. l., Dicranella varia, Didymodon luridus, Hypnum cupressiforme
var.
resupinatum, Hygrohypnum luridum,
Scleropodium
cespitans, Syntrichia papillosa,
Tortula muralis, Trichostomum
brachydontium.
No vegetative propagules seen. Not seen
c.fr.
