*1: On mortar between
blocks of horizontal slaty rock of grave in churchyard,
unshaded, churchyard at Kea, SW84, 1994, DTH 94-212
(BBSUK, DTH) (Blockeel 1996:
*2: Concrete water tank
on Badgall Downs, N. of Laneast [SX 28], 1973, JAP
(BBSUK) (Crundwell 1974: 173, Paton MS: opp.
Var. riparium is 'most
likely an environmental modification not worthy of any
taxonomic status' (J. Lewinsky-Haapasaari in Nyholm 1998:
Unrecorded by Paton (1969a), but now too many
records for it to be regarded as LS.
Records all from old calcareous masonry (old
concrete or old mortar), of wall, ruins, retaining wall,
grave-surround, grave-cover, churchyard path, concrete block,
old mine-structure and bridges e.g. over railways. Found on
horizontal, gently inclined and steeply inclined substrates,
all records being from unshaded places. Associates recorded
pulvinata, Orthotrichum anomalum,
crassipilum, Tortula muralis; also
Probably commonly c.fr. [only recorded with
capsules]: capsules immature 1-5; dehiscing 4-6; dehisced [1
old], 5, 6, 10.