*1: Mount's Bay, 1842,
WC (NMW) (Paton 1969a: 690).
*2: Lostwithiel, 1906,
RWS (TRU) (Paton 1969a:
690).
Divided into two British species based on study by
Szweykowski et al.
(2005), but Conocephalum
salebrosum Szweyk. et al. has not been
recorded in C&S. Records from 2005 onwards are divided
between Conocephalum
conicum s. str.
and C. salebrosum (see
below).
Commonly forming extensive pure patches that tend
to exclude other plants, sometimes covering several square
metres. Habitat notes from Cornwall are as follows. Usually on
soil of stream and river banks, mainly within or near
flood-zone, and commonly on steep surfaces and where partly
shaded, e.g. in woodland, groves of trees or Grey
Willow
carrs. Also on rocks (vertical, inclined or horizontal:
granitic, serpentinite, slaty) and masonry of banks and
horizontal soil near water-level. Once on clayey soil of lake
edge (The Loe). Associates include Epipterygium tozeri,
Lunularia cruciata,
Pellia
endiviifolia, Pellia epiphylla, Pohlia melanodon, Thamnobryum
alopecurum, less often Dumortiera
hirsuta.
Also recorded deep inside sea cave on rock dripping
with water and in waterfall on N.-facing slate sea-cliff. On
firm sometimes horizontal soil and old fern tussocks in
unshaded and tree-shaded flushes, and in part shaded sites
sheltered beneath overhanging boulders on, above, and under
N.-facing sea-cliffs. Occasionally more extensive on damp soil
in woodland, e.g. on flushed slopes. In deep shady hollows
inside ruined mine buildings, on wet slaty rocks in old
quarries inside deciduous woodland. Damp old masonry shaded
inside old lime kiln near Cotehele Bridge. Steep damp bank
just N. of Poundstock church.
Occasionally c.fr.: receptacles immature 1, 3, 4,
dehisced
3.