*1: Trevaylor,Penzance, 1865, WC
(PNZ) (Paton 1969a:
*2: Trebetherick, St
Minver, 1888, RVT (B) (Paton 1969a:
The only recent record from vc1 was from
SW33V, but possibly it was based on the same plants as
recorded later as var.
Recently recorded mainly near R. Tamar and R. Inny,
mostly growing within upper parts of flood-zone of rivers.
Small patches or extensive mats on bark, growing extensively
on bases of large old Ash trees, in smaller amounts on
riverside Sycamores and Alders, bit on hedgerow Sycamore
branches above flood zone, once on old oak. Grows unshaded to
lightly shaded. Also at Ethy, on vertical bark of old Sycamore
in parkland (near Leptodon smithii, Syntrichia
Not seen c.fr.