THE LICHENS ОЕ SOUTH LANCASHIRE. 127 
thecium colourless ; spores 27-42 х 1-2 ш. The plants were well 
developed, with the apothecia abundant, and probably belonged to the 
f. intermedia, Hepp. 
Occurred again on old leather in the same locality, May 1914, and 
in association with the next following species. 
It is of interest to note that Sandstede (18) has also recorded this species as occur- 
ring on the same substratum and in the same kind of habitat, namely on old leather 
lying about in the dunes in the East Friesian Islands ; and it may be added that our 
examples collected in May 1914 appear to agree well with those of a form he mentions 
having small, reddish-brown apothecia “zu Gruppen gehäuft.” A similar form was 
found by one of us, with Mr. J. W. Hartley, on the same matrix on the Manx sand- 
dunes. 
ВАСІрІА EFFUSA, Arnold. 
On old leather lying in the sand-dunes near Freshfield, Мау 1913. 
The apothecia were often discoloured by a mould, the dark mycelium of which had 
penetrated the hymenium. 
BACIDIA LATEBRICOLA nobis, spec. nov. . 
Thallus viridi-flavescens, granuloso-leprosus, eftusus, K— € —. Apo- 
thecia minuta, primo carnea, deinde livida et ætate nigricantia ; epithe- 
cium incolor; hypothecium fere incolor; hymenium incolor, iodo 
vinosum, haud primo ccerulescens. Asci cylindrico-clavati, 35-45 р 
longi. Paraphyses clavate. Sport anguste lineari-clavati, plerumque 
uno polo obtusi, altero attenuati, varie curvi, rare recti, gracillimi, 
5-11-septati, septis tenuibus 26-48 y x 1-2 (ubi latissimi). 
The thallus resembles that of B. effusa, Arnold, from which it differs in the reaction 
of the hymenium with iodine, and in the shorter spores, and habitat. From 
B. herbarum, Arnold, to which it is also allied, it differs in the colour of the thallus, 
smaller apothecia, reaction of the hymenia with I, and the more clavate paraphyses. 
From В. arceutina var. hypnea, А. L. Sm, it differs in the smaller, more strongly 
flexuose spores, iu the colour of the thallus and apothecia, and colour of epithecium, 
as well as the reaction of the hymenium with iodine. Apothecia are only very 
sparingly produced. 
Hab. Creeping over decayed mosses and thin dry humus on broken 
sandy banks overhung by herbage. Sandhills at Formby, April 14, 
1913; Freshfield, May 1914. Туре spec. in herb. Wheldon § Travis. 
BACIDIA ARCEUTINA, Branth & Rostr. The type is not known to occur in 
South Laucashire, but the following variety has been met with. 
Var. BREVISPORA nobis, var. nov. 
Thallus 
cinerascens., Apothecta primo plana, mox admodum convexa, margine 
/ , - 
granulosus, ob hypothalium nigrum præcipuum obscure 
obliterato, novella levissime fuscescentia, cito nigra.  Æypothecium 
