*1: Castle Horneck,
Penzance, 1868, WC (PNZ) (Paton 1969a: 714).
[Earlier report (Trevaylor, in Curnow 1865) probably refers to
F. polyphyllus: Paton
All Cornish records are from a single site by the
stream NE. of Castle Horneck, W. of Penzance. At this locality
it grew in patches on overhanging, compact soil of
stream-bank, 20-120 cm above fast-flowing water in shade of
Beech trees. Some of the plants are above the height of all
but exceptional flooding. Although growth of this species on
soil was mentioned by Smith (1978 p. 204) the Atlas
(2 p. 203) refers to it only as growing on
alluvial sand and gravel and rocks, 'below
Not seen c.fr. [all British plants reported to be
male: Smith 2004: 258].