As noted with Conocephalum conicum s.l., this is
the only one of the two segregate species that has been
recorded in Cornwall (C. salebrosum appears to
occur mainly in limestone districts of the British Isles).
Habitat notes with recent records from Cornwall are
as follows. From soil and rocks on stream and river banks (up
to 0.5 m or occasionally higher above summer water level),
lightly to moderately shaded in deciduous woodland or by few
trees (over serpentinite on Lizard peninsula). Also on banks
of R. Tamar within its inundation-zone. On steep flushed head
under overhang near base of N.-facing sea-cliff at Porthmeor
Cove. On slaty rock of low sea-cliff shaded by trees beside
Helford River, where flushed in
wet weather but very dry at times. Small patch on wood of
decaying log lying in stream. Once extending onto calcareous
masonry of shaded bridge over stream. Very large patches, up
to 10 m across, on granitic rocks and damp soil along large
stretch of disused railway cutting, in light to heavy shade,
similarly abundant on calcareous slaty rock in disused slate
quarry part-shaded by woodland (with Cratoneuron filicinum,
Fissidens
adianthoides, Pellia endiviifolia,
Thamnobryum
alopecurum). Sometimes extending onto soil in flushed
areas of wet woodland or Grey Willow carr. Associates
recorded: Lunularia
cruciata, Pellia
endiviifolia, Pellia epiphylla, Plagiomnium undulatum,
Platyhypnidium
riparioides.
One record c.fr.: receptacles newly dehisced 4
(Gwills).