*1: Sunset Wood, Kea
near Truro, 1839, EAW (TRU) (Paton 1969a:
703-704).
*2: St Breward, 1905,
RWS (TRU) (Paton 1969a:
703-704).
Often forms extensive patches, commonly of this
species alone. Rather uncommon in Isles of Scilly. Habitat
notes from C&S are as follows. On acidic rocks (mainly
steep faces) and steep acidic soil in old quarries (granite,
slate), on banks in woodland (deciduous and conifer), banks
beside tracks, lanes and roads, stream banks, bank at edge of
reservoir, banks on heaths and in acidic flushes, upper slopes
of sea-cliffs, low cliffs beside creeks, groves of trees and
other banks, on 'hedges', soil on top of stone walls, boulders
beside reservoir and in areas of old copper mine spoil.
Commonly in light to moderate shade, but sometimes in open, or
sometimes heavily shaded (e.g. on rock in entrance to old mine
adit) or trickling with water. Common on old metalliferous
mine spoil on flat ground, gentle slopes or steep banks, often
as extensive patches, sometimes in places that are apparently
copper contaminated, often partly shaded by Calluna vulgaris or on
N.-facing banks (near Gymnocolea inflata).
Also common in crevices of walls built of or retaining mine
spoil. On old walls, usually slightly to rather heavily
shaded, on rock or thin soil (with e.g. Campylopus flexuosus,
Dicranum scoparium,
Lophozia
ventricosa). On clay and stony soil of flat areas and
banks, and on sheltered sides of granitic boulders in old
china clay quarries and as colonist on banks in and around
working quarries and on spoil heaps, often in large patches
(with Cephalozia
bicuspidata, Gymnocolea inflata, Nardia scalaris).
Acidic soil and wet humus on banks and slopes on and above
sea-cliffs. Peat and humic soil of banks on heaths and wet
heaths, in mires and beside acidic flushes, locally on
moribund sphagna (with Calypogeia arguta, Cephalozia
bicuspidata, Scapania irrigua).
Other associates include Calypogeia fissa, Calypogeia
muelleriana, Cephaloziella
hampeana, Dicranella
heteromalla, Entosthodon obtusus,
Kindbergia
praelonga, Heterocladium heteropterum
var. heteropterum, Isothecium myosuroides
var.
myosuroides, Solenostoma
gracillimum, Lepidozia reptans, Lophozia bicrenata, Pellia epiphylla, Pogonatum aloides, Pohlia annotina, Pseudotaxiphyllum
elegans, Scapania
compacta, once each Ditrichum plumbicola,
Lophozia sudetica,
Tetraphis
pellucida.
Foliar gemmae very common. Perianths common: 1-4,
6-12; capsules occasional/frequent: immature 1-4, dehiscing 2,
3; dehisced 2, 3.
