*1: Margin of
reservoir, Stithians, 1973, JAP (BBSUK)
(Crundwell 1974: 166).
*2: Track on bank above
R. Fal, Goss Moor, 1988, JAP 2657 (BBSUK)
(Blockeel 1989: 25).
Easily confused with some immature plants of Atrichum undulatum
that lack transverse undulation on the leaves, although the
present species tends to have wider leaves. It also differs in
other leaf characters (Smith 2004). Apparently also differs in
frequent presence of tubers on rhizoids, although these have
not been confirmed in British material, despite several quick
searches of Cornish specimens.
Small patches or forming low turfs. Habitat notes
from Cornwall are as follows. Near Porkellis Moor: as apparent
colonist on almost bare gritty soil on gravel of fairly
recently dug-out edge of small stream in marshy pasture;
unshaded; two years later site with much more cover of grasses
and herbs and species not seen in brief search. S. of
Temple:
small patches on wet mineral soil of low mounds in mire below
china-clay spoil, unshaded. Stithians Reservoir,
Colliford
Lake and Siblyback
Lake: on
firm sediment or hard soil of banks or flat ground exposed
high in inundation zone beside reservoirs, unshaded or partly
shaded by Grey Willow scrub. Crowdy Reservoir: on unshaded
peaty mud exposed close to normal shore-line (with Dicranella rufescens,
Pohlia
camptotrachela). Goss Moor: on unshaded or almost unshaded
damp clayey soil of track and its edges (surfaced with
china-clay spoil) in open disturbed areas among wet heaths,
rush pastures and Grey Willow carrs (with Bryum bornholmense, Dicranella
heteromalla, Ditrichum
heteromallum, Fossombronia incurva,
Solenostoma
gracillimum, Phaeoceros laevis).
Fowey Valley: patches on sandy
sediment of steep bank beside river, almost
unshaded.
One recent record c.fr.: capsules immature 11 (Goss
Moor).
