ON THE LICHENS IN DR. WITHERING’s HERBARIUM. 
57 
L. \?i.ctexis = Pertusarialaclea (Seiner.), — (specimen from Dick- 
son : sterile) . 
L. ^txo-dilbvis = Lecidea aglcea (Smrmft.), — (specimen from 
Griffith), and= L^cawora ccesiocinerea Nyl., — (specimen on flint 
from Isle of Wight.) 
Var. 2.^Lecidea decolorans var. granulosa (Whlnb.), 
— (specimen from Rellian, on peat earth). 
Xi. simplex = Zecawora simplex (Dav.), — (specimen on slate from 
Griffith). 
Ii. calcareus calcarea (Ach.), — (specimen from 
Relhan) sendi—Lecidea rimosa (Deks.), — (specimen from Griffith), 
2indi—Lecidea contigua Fr., — (specimen from Dickson). 
L. im.jxi%xsvis=Lecidea calcivora (Ehrh.), — (specimen from 
Dickson) imdi=Verrucaria calcivora Nyl , — (specimen from 
Relhan). 
L. sanguinarius = sanguinaria (L.), — (specimen from 
Dickson, corticole). Cfr. Bot. Arr. Ed. 3, iv., pp. 6,7. 
It. ^x^xiifoxxais> = Lecidea myriocarpa (DC.), — (specimens from 
R. Brown) ; probably not Dickson’s plant. 
Ii. oculatus = oculata (Deks.), — (a saxicole frag- 
mentary specimen from Dickson, with the papillae but little evolute 
and sterile)^ 
L. xaxis>coxvita = Lecidea muscorum (Sw.), — (specimens from 
Relhan and Dickson), 2 iHdi=Lecidea milliaria Fr., — (specimens 
from Griffith). 
L. •;^i\viidixis = Lecidea contigua Yy. minor, ‘‘ apotheciis convexis,” 
— (specimens from Griffith and Davies). 
L. gelasinatus, t. xxxi., f. l.=Sphinctrina turhinata (Pers.), — 
(specimen from Griffith, evidently the plant intended), 2iYidi=Lecidea 
parasitica (Flk.), — (specimen also from Griffith). 
L. c\nex?iScexi%=Lecidea speirea (Ach.), — (specimen from 
Griffith). 
Var. '2.=Lecanora glaucoma (Hffm.), with Arthonia varians 
‘(Dav.), and having the margin of the apothecia 
subcrenulated, — (specimen from Griffith). 
L. cQxifiviexis =Lecidea conjluens (Ach.). Of vars. 2 and 3 there 
are no specimens. 
Var. A:.=Lecidea fusco-atra (Ach.), — (specimen from 
Griffith). 
Var. h.—Lecidea grisella (Flk.),— (specimen from Griffith). 
Var. Q.=Lecanora hadia{A.c\\.'), — (specimen from Griffith). 
L. canescens = canescens (Deks.), — (specimens from 
Dickson, Griffith, and also from Relhan s.n. Lichen incanus). 
L . caexuleo-nigxicans = Lichen vescicularis ( Hffm.) , — ( specimens 
from Dickson, Hort. Sic. 24 and from Relhan). 
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