256 Dr. W. Nylander on new British Lichens. 
XXXI.—WNotule Lichenologice. No. XVII. 
By the Rey. W. A. Leicuron, B.A., F-L.S. 
Dr. NyLanpEr makes the following additions to the Lichens of 
Great Britain in the ‘ Flora,’ April 26, July 17, and August 17, 
1867 :— 
1. Melaspilea amota, Nyl. 
Thallus macula albida indeterminata indicatus vel vix ullus dis- 
tinctus; apothecia nigra, innata, rotundata vel rotundato- 
difformia (latit. 0°5 millim. vel parum amplius), margine pro- 
prio tenui inequali; spore 4—8, incolores, l-septate, medio 
constricte, longit. 0:°016—0°022 millim., crassit. 0‘°007—0-010 
millim.; paraphyses vix ulle; thece conferte; epithecium 
fuscescens vel fusco-luteum ; hypothecium tenuiter et leviter 
vage obscuratum. Jodo gelatina hymenea vel thece dilute 
cerulescunt (qui color dein evanescit). 
Killarney, Ireland (Mr. I. Carroll). 
A M. arthonioide (Sprengelii, Ach.) mox paraphysibus defi- 
cientibus distat. Apothecia interdum epithecio fusco-rufescente 
in statu humido ; spe circumscissa (h. e. fissura cmeta). 
2. Arthonia ilicinelia, Ny]. 
Similis A. zlicine, Tayl., sed sepius minor, sporis seepius minori- 
bus (sed variant longitudine 0°021-0:036 millim., crassit. 
0:008-0:012 millim.), et iodo gelatina hymenea vinose rubes- 
cente (nulla visibili ceerulescentia). 
Ad corticem J/icis in Hibernia, Killarney, legit Carroll. 
Spore 8-6-septate, plerumque bene evolute et majores 5- | 
septate. Accedit versus A. cinnabarinam. In A. ilicina iodo 
gelatina hymenea cerulescit (cerulescentia persistente). Epi- 
thecium hydrate kalica sordide czrulescit. 
3. Verrucarta achroopora, Nyl. 
Thallus hypophleeodes, macula pallido-glaucescente indicatus ; 
apothecia extus protuberantia thallode leviter convexiuscula 
(diam. 0°5 millim.) et ostiolo subincolore vel pallido puncti- 
formi (diam. 0:05—0°07 millim.) non impresso indicata, con- 
ferta, perithecio immerso integre (sat tenuiter) nigro (diam. 
04-05 millim.), seepe depressiusculo; spore 8, fuser, 4- 
loculares, longit. 0°016—-0:019 millim., erassit. 0°006—0:009 
millim. 
In Hibernia, Killarney, ad corticem legit Carroll. 
Arcte accedit ad Pyrenulam porinoidem, Ach. Syn. p. 128, et 
vix est nisi ejus varietas ostiolis incoloribus vel pallidis (raro 
obscuris). Facies Thelotrematis. 
