NOTES ON THE LICHENS IN SOWERBY'S HERBARIUM. 357 
diffract ee also occurs in herb. Sowerby, sx). nom. Lichen multi- 
punctus, and seems to e referred to in the description in E. B., where it 
is said that the plant is “ composed of two nien d _uncermoet 
- black, the upper white, with a considerable cavity between 
ichen incurvus, E. B. t. 1315, = Parmelia Mosen (Bom cie 
The specimen figured, which in the description is said to have been 
drawing, in Grassmere, Westmoreland, is not P. incurva (Pers.) 
hitherto ‘believed, and as certain dipétilibná in the description, which is 
as above, an very characteristic specimen ‘of the larger form of this 
plant, connecting it closely with P. ae ace This determination 1s 
me confirmed by Borrer's statement, E. B., S. t. 2796 descrip. (note), 
this lat tter as denoting P. Mou wee A much smaller state of this 
species (Mongeotit) with discrete lacinie referable to f. discreta, Nyl. pro p. 
occurs in ee, Braemar, ex. herb. Cromb., but infertile. True P. 
incurva we have seen only from Dunkerron, Ireland, in herb. Sir T. Gage, 
and from Braemar, in herb. Crombie, on of the mountains of 
which it is abundant, though the ipo bad a are per seen well developed. 
It is also the Lichen multifidus, Dicks. E IIL p. 16, t. 9, f. 7, from 
Scotland, according to specimen x = own herb. 
Lichen encaustus, E. B. t Palis alpicola, Th. Frs.— 
The specimen drawn was cv as | state ted i description, 
Stuart on Ben Nevis. Both the colouring of the figure and the language 
B . . 
employed—‘ this dirty, ill-looking Scotch plant’ point to P. uet as 
the species denoted, apart altogether from the specimen aegis : 
herb. Sowerby. This is further confirmed by ithe fact that while P. 
a 
before us certainly presents a marked contrast to P. encausta, Sm., 
figured and detet d in Linn. Trans. I. p. 83, t. 4, f. 6, whether ik is to 
he says, * [ believe I have it from the coast of Cornwall,’ — hogs 
founding it with Physcia aquila, to dark- coloured specimens of whi 
Ach.), and 
5. a ambigua, E. B. S. t. 2796, —P. —— 
P. bébé n E — The e specimens represe — in two lower 
figs., of which the barren one eene is — 
> yl, = 
This latter species, since gathered by me in s 
elsewhere to be met with. on the trunks of old firs, tie un e 
our Highland dime For the prm een d. 
Animad. circa FP. Arnold, in Flora, 18 n tl cq 
td referred w as in the possession c of the Linnean M doni 
several specimens of the. present species veni su 
Peai with two of Platysma diffusum (We 
$ 
