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Photo
by Dr M Lueth ©.
*1: Marazion Marsh, 1867, WC (CGE) (Paton 1969a:
697-698).
*2: St Breward, 1905, RWS (TRU) (Paton 1969a:
697-698).
Habitat notes from C&S are as follows. On
lithosols or humic soils, often thin, over old copper mine
spoil, where often common and forming pure turfs or mats,
especially in unshaded or lightly shaded, damp places, inland
and on coasts. Also on 'soil' in crevices of walls built of or
retaining mine-spoil. Associates commonly include Cephaloziella
nicholsonii, Cephaloziella
stellulifera, Ceratodon purpureus,
Diplophyllum
albicans, Solenostoma
gracillimum, Lophozia bicrenata, Pogonatum aloides, Pohlia andalusica, Pohlia annotina, Pohlia nutans, Scapania compacta,
rarely Cladopodiella
francisci, Ditrichum plumbicola;
often beneath patchy Calluna vulgaris.
Moist clay of flat areas and banks in and near old and working
china clay quarries, unshaded (with Atrichum undulatum, Campylopus pyriformis,
Cephalozia
bicuspidata, Diplophyllum albicans,
Solenostoma
gracillimum, Lophozia incisa Riccardia latifrons,
Riccardia
multifida, Scapania
irrigua). On thin wet clay over horizontal concrete of
ruin of china-clay dry, unshaded, with Lophozia ventricosa
and Scapania
irrigua. Among low bryophytes and on damp peaty soil on
hummocks and in open patches of mires and on heathland,
sometimes growing from algal sheets (associates include Campylopus flexuosus,
Campylopus
pyriformis, Odontoschisma sphagni,
Polytrichum
commune, Sphagnum
compactum). On open coastal heath on Isles of Scilly,
growing on damp peaty soil in sparsely vegetated hollows. Wet
hollow among Juncus
effusus tussocks near working china clay quarry,
temporarily flooded, unshaded. With other small liverworts as
colonist on china clay spoil, including sites near working
quarries. Edge of damp clayey track, almost unshaded. Patch on
thin soil of crevice in steep retaining wall, part shaded by
woodland edge. Slaty rocks high on
sea-cliff.
Commonly cper: 1-4, 6-8, 10, 11. Not seen
c.fr.
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