*1: China clay waste,
works E. of St Just, May 1963, JAP (BBSUK)
(Paton 1964: 714, 1969a: 697).
*2: Damp bank of waste
from china clay works, Hendra Downs, Nanpean, Feb. 1962, JAP
(BBSUK) (Paton 1963: 485, 1969a:
697).
Habitat notes from C&S are as follows. Small
plants on soil in flat partly bare area of stony china
clay/mine spoil, unshaded (with Diplophyllum albicans,
Diplophyllum
obtusifolium, Marsupella sprucei).
Small patch on steep clay-soil of almost unshaded stream bank.
Colonist on damp clay, sand and gritty substrates
of unshaded and lightly shaded pool sediments (mica dams),
quarry bottoms and banks and slopes in and near old and
working china clay quarries (with Atrichum undulatum, Blasia pusilla, Campylopus pyriformis,
Cephalozia
bicuspidata, Diplophyllum albicans,
Gymnocolea inflata,
Solenostoma
gracillimum, Lophozia ventricosa,
Nardia scalaris, Riccardia latifrons,
Riccardia
multifida, Scapania
irrigua). On damp peat of low bank beside acidic flush,
unshaded. On flat areas e.g. decaying and living sphagna or on
hummocks in mires (associates include Lophozia ventricosa,
Odontoschisma
sphagni, Sphagnum
capillifolium). One record on partly bare humic soil over
metalliferous mine-spoil, unshaded to
part-shaded.
Usually with gemmae. C.per.: 11. Not seen
c.fr.
