*1: Near Penzance,
1840, WC (OXF) (Paton 1969a:
692).
*2: Rough Tor, 1907,
RWS (TRU) (Paton 1969a:
692).
Habitat notes from Cornwall are as follows. On
horizontal to sloping or vertical acidic soil (mineral or
humic) or soft or crumbling rocks, on path edges, laneside
banks, base of 'hedges', flushes, ditch-sides, stream and
river banks, in old quarries, entrances to mine adits, in
china-clay pits, on old china clay spoil heaps, on mine-spoil,
often in light to moderate shade, e.g. in woodland (deciduous
and conifer), groves of trees, Grey Willow carrs, less often
rather heavily shaded; also in open where sheltered or on
N.-facing slopes. On wet peat/sphagnum debris in open mire
(near Pellia
neesiana). Vertical acid soil of path-side banks, part
shaded (with Calypogeia
fissa, Calypogeia
arguta). Acid soil on steep sheltered banks above
N.-facing sea-cliff . Low bank at edge of flush above
sea-cliff. Peaty humus or peaty banks in mires, where
ground-cover open and grazed/trampled, or on ditch sides. Side
of old fern tussock in wet Grey Willow-carr. Thin soil low on
old wall in deciduous woodland. Other associates include Anthoceros punctatus,
Conocephalum
conicum s. str., Dicranella
heteromalla, Dicranella rufescens,
Kindbergia
praelonga, Solenostoma
gracillimum, Lunularia cruciata, Mnium hornum, Nardia scalaris, Phaeoceros laevis, Plagiomnium undulatum,
Pohlia annotina, Rhizomnium
punctatum.
Commonly c.fr.: capsules immature 1-4, 9-12;
dehiscing 2-4 (5); dehisced 3, 4.