CORRESPONDENCE. 155 
150. Bacidia luteola, var. cesio eben — Lecidea luteola, var. po- 
liena, Nyl. “I named this plant im 1856, and cannot. understand on w 
grounds he construes it into an error. The name —— however, will 
in the future have to give place to that of Bacidia stenospora, Hepp. 
154. Bilimbia sphaeroides, Mudd: Lecidea sabuletorum, Nyl. -This is not 
strictly an error, See the synonyms in Manual, p. 187. 
155, Lecidea npr Mudd. L» tricolor, Nyl. I cannot agree. See Ma- 
DE pp. 176 and 1 
rag Lecidea aneia, Mudd... 7. vernalis, var. corticalis, Nyl. 
163. Lecidea minuta, Mudd. D. tenebricosa; Nyl. 
_ Neither of these are strictly errors. They are the plants of the authors quoted. 
17 oeeo å aggregata; Mudd, L. incincta, Nyl. I- named. this plant in 
1858, and cannot see where I have erred.» Dr. Nylander's L: Scand. was not 
published until 1861. 
178. Lecidea lapicida, Mudd. `L. lithophila, Nyl. According to Igiene 
Exs. 157 !, on which I placed great confidence, I have not erred in 
. = ‘The species which that gentleman régarded. as L- lapicida coria of 
two forms, VA have been described as-distinet, viz. L. polyearpa, Flk., and 
L. lithophita, A 
180 iiic pe var. r. confluens, Mudd. L. vete nm. vm Ret I : 
lisse shied: 
7185. Buellia — Mudd. JL. sophodes, var. lavata, Nyl I cannot 
possiby agree to 
‘186. Buellia erento, Mudd: Lecidea ocellata, Ny. diet namie for 
64? 
» 208, Opegrapha Chevalier, Mudd. <O. confluens, Nyl 1 sem apparently 
mixed thes: 
"A. Opegr apha rubella, Mudd. O. viridis, Nyl, 
215 and 216. Stenographa anguina; Mudd. Graphis saphistiaaks; Nyl. 
These are only other names for the same apsqeen 
228, 229, 230, 231. Probably he is correct 
» 265. Pertusaria pustula, Madd. P. [eioplaca, Nyl. Aceording to Logis. 
Iam correct. 
“> Notwithstanding the orien acumen which Dr. Nylander has displayed. in 
discovering what he deems “serious errors,” perhaps you will kindly allow me 
“to point out two or three others which have sppatently evaded his siexaeope 
MO. Gyelecia máu d 284, Thel idi conoideum. Thesea are both, 
al tru ena, an elidium 
"more or less, iiis rin rem Flotovii, Kbr.; and Thelidium Salweii, Leight. : 
136. Aspicilia ochracea is A. flavida, Hepp. Schærer has ipid y 
‘Out two: plants under the name ochracea, . The specimen. in’ my copy e 
L. H. 128! I understand, is flavida, f 
