*1: Near old Marazion
Bridge, 1861, WC (PNZ) (Paton
*2: Port Quin, 1879,
RVT (B) (Paton 1969a:
The species is apparently in long-term
having become extinct since the nineteenth century at all of
its inland sites as well as over much of Wales and eastern and
south-eastern England (D.F.
Chamberlain & C.D. Preston in Hill et al. 1992: 245).
Records from 19 sites in Cornwall since 1960 form the
large majority of all recent British records. Since then it
has been refound at only two localities and several recent
attempts to refind it at other sites where it occurred in the
1960s have been unsuccessful.
Habitat notes for recent Cornish records are as
follows. At Pentire Point East: grows in rather small amounts,
with other mosses on unshaded, thin soil at top of slaty
sea-cliffs; associates were Archidium
alternifolium, Bryum dichotomum, Bryum kunzei, Cephaloziella
divaricata, Lophozia bicrenata, Tortula viridifolia,
brachydontium, Weissia controversa.
At Talland: on unshaded soil of bank at edge of pasture near
coast (in small amount).
Commonly c.fr. (only recorded with capsules):
capsules immature 1, 2, dehiscing 1, 2, dehisced