*1: Lelant Sands, 1867,
WC (PNZ) (Paton 1969a:
*2: On film of clay on
damp concrete wall at old china-clay works, W. of Pont's Mill,
SX05, 1997, DTH 97-445 (BBSUK) (Rothero
Perhaps better treated as a var. or subsp. of D. fallax (as it was
e.g. by Wigginton 1995: 69), because forms apparently
intermediate between them are not rare in Cornwall (e.g.
Grows as low lawns, or more sparsely as patches or
intermixed with other low mosses. Notes on habitats in
Cornwall are as follows. A calciphile of unshaded habitats.
Most common on calcareous sand of fixed dunes and edges of
dune-slacks, in very low turf or with other low mosses, and in
similar habitats where blown sand rests on hillslopes.
Scattered records also from thin/compressed soil of old paths
and tracks (over serpentinite and gabbro on Lizard pen.,
especially near quarries, and on old mining ground elsewhere
in vc1), a gravel car park, clay soil receiving drainage from
old concrete, and thin soil overlying old concrete (on ruined
mine buildings; also once each on a vertical damp wall of ruin
of china-clay 'dry', and on disused railway station platform).
Single finds also: on soil dumped on top of 'hedge'; growing
directly on weathered old concrete of ruin; in open part of
basic flush above sea-cliffs. Associates recorded include Bryum dichotomum, Dicranella varia, Didymodon fallax, D.
No vegetative propagules recorded. Not seen