*1: Penlee near
Mousehole, 1860, WC (NMW) (Paton 1969a:
704).
*2: St Breward, 1905,
RWS (TRU) (Paton 1969a:
704).
Habitat notes from Cornwall are as follows. Mainly
pure patches, on nearly flat clay soil of path or track edges
and on low granitic rocks, along river banks and near ditches
or streams, in open or partly to well shaded by deciduous
woodland (associates include Calypogeia fissa, Cephalozia
bicuspidata, Diplophyllum albicans,
Gymnocolea inflata,
Solenostoma
gracillimum, Marsupella emarginata
var. emarginata).
Soil or thin soil of flat ground, banks or slopes in areas of
old copper mine-spoil, in open or part shaded by Calluna vulgaris or trees.
Forming patches, sometimes extensive on sandy slopes or soil
on flat ground in areas of old copper-mine spoil (with Scapania compacta, Solenostoma
gracillimum). On rather crumbly surface of boulders at
woodland edge near stream. On top of boulder near stream, well
shaded by trees. On granitic boulders near ruined mine
buildings, part shaded by scrub. Amongst sphagna or on bared
peat on hummocks in open mires and acidic flushes; on peaty
ditch-bank.
Foliar gemmae usually but not always present. Seen
cper: 9.
