*1: Trevaylor Bottom,
Penzance, 1861, WC
(PNZ) (Paton 1969a: 739).
*2: Trehane near
Probus, c.fr., 1861, ES (TRU) (Paton 1969a:
739).
Habitat notes from Cornwall are as follows.
Frequently grows tall and luxuriantly on soil in woodland,
most often in damp places such as flushes or streambanks, Grey
Willow carrs, very humid sites such as in old quarries or on
soil among rocks near small rivers and silty-loam of banks of
larger rivers, within flood-zones. Smaller plants often occur
in drier sites with some base-enrichment, e.g. on damp soil at
base of masonry of bridge, near churches, and on bases of old
walls where part shaded; bit in old granite quarry near
concrete of ruins, on thin soil and decayed mortar of ledge on
low ruined wall of mine building (unshaded), damp soil of
shaded roadside lawn near stream. On shaded 'hedge' and on
damp banks. On base of concrete and mortared-stone walls e.g.
of ruined mine buildings and reservoir dam, part shaded (small
forms such as those from these walls can be very hard or
impossible to distinguish from P. affine). On damp
shaded rocks (gabbro?) under Sycamore trees near pond. Bits in
open flush above sea-cliff. Associates include Atrichum undulatum, Brachythecium
rivulare,
Cirriphyllum piliferum, Conocephalum
conicum, Kindbergia
praelonga,
Hyocomium armoricum, Rhizomnium
punctatum,
Thamnobryum alopecurum. Often near Chrysosplenium
oppositifolium.
Single record c.fr.: immature capsules on ca 10 stems of patch
growing part shaded at base of wall in ruined mine buildings,
Minions, vc2, 13 Feb. 1999, DTH 99-33. All
other Cornish records c.fr. are old (19th
Century?).
