by Dr M Lueth ©.
*1: Miney, Newlyn, 1863, WC (PNZ) (Paton 1969a: 742). This record
is older than that published as new for vc1 by Warburg (1962:
*2: Bodmin Moor, RVT (Tellam 1888, Paton 1969a: 742);
W. of Looe, 1962, JAP (BBSUK) (Paton 1969a:
Apparently somewhat under-recorded inCornwall
in past, probably due to its small size, frequent occurrence
in small quantities and similarity to O. affine. Indeed, the
species is easily overlooked among small plants of the
commoner O. affine, from which
material collected when moist needs microscopic confirmation
through demonstration of the cryptopore stomata on capsules.
However, dry plants can often be distinguished in the field by
the old capsules being distinctly narrower and darker coloured
than those of O.
Notes on habitats in Cornwall are as follows.
Normally as an epiphyte, with most records from Elders,
several on Ash, Grey Willow and Sycamores, once on elms.
Perhaps prefers sheltered sites and often near water, but also
found in an open site on flat dry ground. Once in scrub above
sea cliff (Maenporth). Like other Orthotrichaceae, it avoids
really heavy shade such as inside dense woodland, and it
appears to prefer horizontal or sloping trunks or branches to
vertical ones, but recorded at times on vertical trunks in
moderate shade. Associates recorded include Cryphaea heteromalla,
viridissimus var. viridissimus. Recorded
on bark within flood-zone of R. Tamar. Single record of
several small patches (cfr) on large granitic boulder at edge
of pasture, lightly shaded by Common Nettle (same boulder had
heteromalla, Orthotrichum affine,
Commonly c.fr. [only recorded with capsules]:
capsules immature 1-7, 11; dehiscing 6-8, 10; dehisced [1-7