118 
NEW BRITISH LICHENS. 
By tHe Rev. W. Jonnson. 
have submitted specimens to lander, who has deter- 
d them. As a strictly scientific description of 
these plants will be given by Dr. Nylander himse i . 
e ; 
coming ‘Addenda ad Lichenographiam Europiam,’ I shall not 
indeterminate, of a medium thickness, rimoso- or some 
areolato-diffract. When dry, the chinks are rather wide. 
h 
The apothecia are innate and suburceolate, with an obtuse even 
margin; their colour is fuscescent, margin paler, The hypothecium 
is pale; paraphyses slender, filiform, conglutinate. While ad- 
herent the apices are fuscescent; when separated by K they are 
pale and slightly articulate. The asci are lineari-clavate. The 
spores numerous, colourless, oblong, very minute e gelatina- 
hymenea is cerulescent, then slightly tawny with iodine. Tha 
K— C—. This plant was found on fresh-water-washed sandstone, 
close beside the sea; Barrowmouth, near Whitehaven, Cumberland, 
1880. 
Lr A ALpo-Lurescens, Nyl., n. sp—Thallus white or be- 
tween white and grey; its growth seems to be from white at first 
to a bluish grey in age. It is closely adherent, indeterminate, 
range-red, concave, | 
margin, growing paler outward, until it blends with the subtending 
thalline margin. The centre of the apothecia is frequently, though 
not always, furnished with an umbo, and the margin often flexuose. 
The hypothecium is pale; paraphyses are moderate, free. Th 
spores are eight, polari-bilocular, ellipsoid; the polar cells are 
large, with a distinct connecting tube. _ ith K the hymenium 
becomes deep crimson, especially the apices 
Thallus K— C— apothecia K deep crimson. This lichen grows on 
sandstone rocks, in low altitudes, where the atmosphere is moist. 
I first gathered it on the rocks by the side of the River Tyne, at 
Bywell, Northumberland, in 1878. Since then I have found it at 
Wark-upon-the-Tyne, Northumberland; and on the roadside 
between Whitehaven and Scalegill, Cumberland. 
papillose, with prominent thalline margin. Section of hymenium 
rather dark; paraphyses slender. Spores from two to four in each 
Q 
