62 
ON THE LICHENS IN DR. WITHERINg’s HERBARIUM. 
L. sty^iyis=Parmelia stygia (L.), — (sterile specimen from Dick- 
son), and also “ Parmelia alpicola Fr. fil, — (specimens from 
Dcks. Hort. Sic. 25^). 
L. stellaris = (^Physcia stellaris (L.), — (specimens from Rellian, 
Dickson, and at Edgbaston Park). 
Var. 2 = Physcia pulverulenta (Schreb.), — (specimen from 
Griffith). 
Var. Physcia pulverulenta var. venusta , — (speci- 
men from Edgbaston Park). 
Yar. A,=Physcia ulotlirix — (specimen from Griffith). 
L. tiliaceus = Pame/?’a tiliacea (Hffm.), — (a small fertile speci- 
men from Dickson). 
"L. = Platysma diffusum (Webr.), — (specimen from Dcks. 
Hort. Sic. 23). 
L. vltysoiies = Parmelia p^liysodes (L.), typical, — (a fertile speci- 
men from Dickson, also one from Portugal). 
L. cexitxifvL^vLB = Parmelia conspersa (Ehrh.), — (a fertile speci- 
men from Dickson). 
L. carnosus = /a carnosa (Dcks.), — (fertile specimens 
from Dickson). 
Ii. saxatilis = saxatilis (L.), typical, — (specimens from 
Dickson, one of which is fertile). 
Var. 2. Of this there is no specimen. 
L. fulvus. Of this there is no specimen. 
1^, ova.'^li^\odies> = Parmelia omphalodes (L.), — (fertile specimens 
from Relhan). 
L. parietinus = P%scm parietina (L.) typical,— (specimens 
from Dickson and Relhan). 
L. marginalis = Collema melcenum, (Ach)., f. (Huds.), — 
(specimen from Relhan), and = (7. melcenum typical, — (specimen 
from Dickson), d\.s>o = Collema multipartitum (Sm.), — (specimen 
from Griffith). 
L. olivaceus = Pam<?Zm exasperata (Ach.), — (fertile specimens 
from Dickson), Parmelia Delisei (Dub.), — (specimen from 
Griffith). 
Vars. 2 and 3. Of these there are no specimens. 
E. Somewhat crustaceous, cup-hearing . 
L. foliaceus = G/ucZowm alcicornis (Lghft.), — (specimen from 
Relhan). 
Var. 2. Of this there is no specimen. 
L. pyxidatus = pyxidata (L.), f. simplex (Roth.), — 
(sterile specimens). 
Vars. 2, 3, and 4. Of these there are no specimens. 
(To he continued.) 
