* 152 NEW LICHENS. 
inches wide, yellowish-ash coloured, unaltered by moisture. 
The nascent scale is at first subrotund, and sends out from 
beneath on all sides white fibres in a stellate manner; at 
length the scale becomes crenate, then incised and effigu- 
rate at the margin. "The patch rests on a thick cushion of 
dark interlacing fibres. Young apothecia are sometimes 
seen growing on the discs of the aged ones. Lamina very 
shallow and transparent; through it is seen the colouring 
matter of the apothecium, lying beneath in a dense layer, 
and even extending downwards at the centre, and forming 
a kind of stipes. 
CALICIUM, Ach. 
1. C. glabellum, Tayl.; thallo tenui, leproso, rimoso, albis- 
simo; apotheciis stipitum apicibus immersis, disco prui- 
noso, stipitibus fasciculatis, subulatis, lævigatis, rigidis, 
aterrimis, subdecurvis. 
HaAn.—On rotten wood; Bear Lake, North America; Rich- 
ardson, Hook. herb.—Patches several inches wide, conspi- 
cuously white; thallus filmy, closely investing, here and 
there in flattened elevations. The substellate fasciculi of — 
footstalks usually follow the course of some chink, and are - 
visible to the naked eye; their tops, when closely in- 
spected, contain immersed the minute apothecia. This ea 
approaches nearest to C. proboscidale, Ach., whose thallus, — 
je is of an ash colour and more floccose, while the 
_ apothecia are turbinate. - The Calicia probably might be 
more os 2 d among Ren ndr Lichens, 
Gaara, Ach. 
E G. einen: Tayl. ; thallo tenui, PR ck 
. bido, continuo, leevigato, ruguloso, obscure nigro-limitato 5 
. apotheciis sparsis elevato-sessilibus,  mibsimplichen. elon- 
gatis, flexuosis, disco Mroy à haliode 
 albissimo subinflego, ^ | — ee 
Has. Où à trees ; 5 8t Vincents Hook. herb Thallus. 
