*1: Trungle Moor, Paul,
1842, WC (NMW) (Paton 1969a:
696).
*2: Brown Willy, 1918,
FR (BM) (Paton 1969a:
696).
Forms which appear to link this species with C. fissa are not rare.
These presumably represent variants of both
species.
Habitat notes from C&S are as follows. Peat or
peaty banks on heathy hillsides, in mires and beside acidic
flushes. Amongst sphagna in mires (with Sphagnum subnitens).
On decaying litter or wet peat low on Molinia caerulea and Sphagnum tussocks in
mires (with Calypogeia
arguta, Calypogeia
fissa, Campylopus
pyriformis, Cephalozia
bicuspidata, Cephalozia connivens,
Dicranella
heteromalla, Kurzia
pauciflora, Kurzia
sylvatica, Lophozia
ventricosa, Mylia
anomala, Odontoschisma sphagni,
Pseudotaxiphyllum
elegans, Riccardia
latifrons, Sphagnum
capillifolium, Sphagnum tenellum; Drosera rotundifolia).
Persisting in part-shaded edge of mire as Grey Willow
colonises. Once on damp humus in flush above N.-facing
sea-cliff (with Calypogeia fissa). On
steep, moist acid humus of streamside bank, part shaded only
(with Calypogeia
fissa). Twice in marshy areas on china-clay spoil. Once on
acidic clayey soil of steep laneside bank, part shaded by
trees (with Calypogeia
arguta). Several records on acid humic soil or thin soil
over rocks of banks or crags in deciduous woodland, sometimes
with Calypogeia
fissa, but often replaced by Calypogeia fissa in
the drier woodland habitats. Other associates in this type of
habitat: Cephalozia
lunulifolia, Diplophyllum albicans,
Lepidozia reptans,
Pseudotaxiphyllum
elegans, Tetraphis
pellucida. On slope of old china clay spoil under young
trees.
With numerous galls at shoot apices, Roughtor
Marsh, Oct. 1999.
Not seen c.fr.
