*1: Lelant, 1862, WC
(PNZ) (Paton 1969a:
724).
*2: Tresillian, 1861,
ES (TRU) (Paton 1969a:
724).
Grows as low turfs, or more sparsely as patches, or
scattered plants colonising bare soil or among other low
mosses. Notes on habitats in C&S are as follows. A
calciphile, typically occurring on free-draining soil in fully
insolated sites, but sometimes in damper places, partly
shaded, or both (occasionally well shaded by trees).
Widespread and common on calcareous sand of dune areas of
north coast of vc1, occurring in very short dune grassland
with other mosses and in partly bare places such as path sides
among dunes, at dune-slack edges and where blown sand rests on
hillslopes, cliffs, in quarries or on 'hedges'. Also frequent
near coasts and inland on open disturbed mineral soils,
including soil heaps, path sides, old tracks, gravel car
parks, sea cliff slopes, rocky banks (serpentinite, slaty),
quarries (granite, serpentinite), disused railways, roadsides,
pavements, graves and over old mine-spoil. Apparently
restricted to basic substrates and common only where these are
extensive such as in the serpentinite areas of the Lizard
pen.. Normally restricted to vicinity of concrete or other
base-enriched places in more acidic regions such as the St
Austell china-clay district, with numerous records from thin
soil over old concrete and on mortared-stone walls, ruined
walls and debris of masonry, two records from thin clay films
over damp old concrete, one in moss carpet over old tarmac,
one from edge of gravel of car park, one from mortar on side
of old wall. Seen once growing directly on shale rock in old
quarry. Frequent associates include Barbula convoluta, Bryum argenteum, Bryum dichotomum, Bryum capillare, Dicranella varia, Didymodon insulanus,
Didymodon vinealis,
Pseudocrossidium
hornschuchianum, Tortella flavovirens,
Trichostomum
brachydontium, Trichostomum
crispulum; others recorded include Aloina aloides, Didymodon luridus, Syntrichia papillosa,
Syntrichia ruralis
var. ruralis.
Occasionally c.fr.: capsules immature 3, 10-12;
dehiscing 1, 3, 11; dehisced 3, 4, 11.
