106 MESSRS. J. A. WHELDON AND У. G. TRAVIS ON 
CoLLEMA cHEILEUM, Ach. Оп the mortar of old, mossy walls, and in the 
crevices of limestone rocks. Rare. 
On mossy, mortared walls by the R. Ribble, near Clitheroe, June 
1912; in the same kind of habitat, limestone wall by Horrocksford 
Bridge, near Clitheroe, March 1913; among moss on the mortar of 
sandstone walls, Little Crosby, Sept. 1912 ; crevices of limestone rocks, 
Bellman Hill, Worston, March 1913. 
COLLEMA GRANULIFERUM, Nyl. Very rare, and occurring only on a 
calcareous substratum. Sterile. 
On a small limestone “ scar” below Pendle Hill. 
The record for Birkdale, Vict. Hist. p. 82, was an error, the plant 
referred to being a granular state of Collemodium turgidum. 
CoLLEMA MELÆNUM, Ach. Very rare, and only seen in a sterile condition. 
On earth among limestone rocks, Worsaw Hill, Chatburn, May 1910. 
COLLEMODIUM TURGIDUM, Nyl. ez Lamy. On calcareous earth in the 
limestone area in the Ribble Valley ; also on shelly sand in the 
coastal dunes. 
Frequently seen in autumn and winter on bare or scantily moss- 
covered ground in the sandhills at Formby, Freshfield, Churchtown, е, ; 
on earth among limestone rocks, Worsaw Hill, Chatburn, May 1910. 
A form oceurs on the sand-dunes in which the apothecia appear to remain per- 
manently more or less urceolate and sunk in the thallus. 
Homopium TENUISSIMUM (Koerb.) Horw. 
Among mosses on a sandy bank in the dunes, Formby, Oct. 1911 and 
Feb. 1912. Only seen in a sterile condition. 
[ LEPTOGIUM LACERUM, Gray. 
* Cotteral Clough, Lancashire,” Mon. Brit. Lichens, i. р. 70.] 
This locality is in Cheshire ; but the plant is so frequent on the lime- 
stone in West Lancashire, that further careful search will no doubt 
prove it to occur in the Ribble district. 
LEPTOGIUM SCOTINUM, Fr. 
Dry, mossy banks among the sandhills, more particularly on the outer 
dunes where the surface is but scantily moss-grown. Frequent. It has 
been collected in good fruiting condition in various parts of the sand- 
dune tract, as at Hightown, Formby, Freshfield, &e. It is most 
conspicuous in autumn and winter, and difficult to find during the 
summer. The var. SINUATUM (Malbr.) is, perhaps, as frequent as 
the type. 
This species is only known, as yet, with us on the sandhills, but should be looked 
for on mossy banks and walls in the limestone area in the Ribble Valley. 
