*1: Newlyn Cliff, 1862,
WC (PNZ) (Paton 1969a: 734).
*2: Bodmin
Road Station, 1893, RVT
(B) (Paton 1969a: 734).
There has been much debate over the correct name
for the species long known to British bryologists as B. inclinatum; Ochi
(1980: 144), Demaret & Geissler (1990) and Holyoak (2003c:
351) adopted B. amblyodon, but
Holyoak (2004) argued that B. archangelicum should
be used and this was followed by Hill et al.
(2008).
Grows as small tufts or larger patches. Notes on
habitats in C&S are as follows. Several records are from
old mortar or concrete or its immediate vicinity, at bases of
walls and a bridge and inside a cattle grid, where unshaded or
almost unshaded. Also found once in a more natural habitat on
unshaded sandy soil of a rather bare area in short grassland
over calcareous blown sand near to dunes. Other finds were
from a wide variety of unshaded situations: on a plant pot in
a sheltered garden, on old metalliferous mine-spoil, in
flushed area on quarry floor (on soil and low rotting wood,
partly shaded by Schoenus nigricans),
and on an old track in a china-clay pit (apparently on acidic
substrate, with Archidium
alternifolium).
Commonly (?) c.fr. [only recorded with mature
capsules]: capsules immature 6, 11, 12; dehiscing 5-8, 11;
dehisced 9.
