60 Dr. Nylander on new British Lichens. 
evoluta) rufescentia, parva (latit. 0:2-0-4 millim.), deinde 
planiuscula et denique biatorina; sporze (formee maxime solite in 
hoc genere)ovoidez(apice infero aut utroque attenuate), submu- 
rali-divisee ; longit. 0°020—0:030, crassit. 0'011—0:014 millim.; 
paraphyses gracilescentes. Gelatina hymenea iodo cerulescens, 
Discovered by Admiral Jones, on the micaceo-schistose rocks 
of Ben Lawers, Scotland. 
The thallus, when moistened with the aqueous solution of 
iodine, becomes of a vinous-red tinge. 
3. Pyrenidium actinellum, Ny). 
Thallus sordide vel obscure olivaceus, adnatus, maculas parvas 
(latit. vulgo 1-2 milli.) sistens, tenuiter “stellato-divisus, 
radiis vix nisi apicibus attenuatis diseretis; apothecia pyre- 
nodea, im centro thalli parce obvia, prominula, perithecio in- 
tegre nigro (latit. 0°30-0°35 millim. ); spore 4"*, fuscee vel 
fuscescentes, oblongze, 3-septatee, longit. 0:020-0-024 millim., 
crassit. 0‘008-0:010 millim.; paraphyses graciles, parce vel 
obsolete. 
Discovered by Admiral Jones, on the chalk of Bexley Hill, 
Kent. 
Lichen est quam maxime paradoxus. Apothecis pyrenocarpis 
et sporis infuscatis distat a Collemeis, sed textura thalli accedit 
ad Leptogium. In centro fere cujusvis thalli apothecia mveni ; 
divisiones hujus variant adscendentes vel erectiusculze (crassit. 
0:03-0:09 millim.). Thallus iodo vinose rubescens. 
4. Calicium trajectum, Ny). 
Thallus vix ullus distinctus; apothecia sicut in C. eusporo, sed 
breviora et nonnihil validiora; spore (ut m Physctis melano- 
carpis) oblongo-fusiformes, biloculares (vel 4-loculares), longit. 
0:052-0:060 millim., crassit. 0°016—0:021 millim. 
Discovered by Rev. T. Salwey, on trees in the New Forest, 
Hampshire. 
5, Lecanora poriniformis, Nyl. 
Thallus cinereus vel pallide cmereus, firmus, sat tenuis, rimoso- 
diffractus ; apothecia in verrucis convexis (Pertusarie facie), 
prominulis (latit. 0°5-1:2 millim., altit. 0-6-1-2 mill.), mnata, 
pallida, epithecio (pallido) punctiformi-contracto 1 vel 8-4 
m quavis verruca; spore 6—8"®, incolores, ellipsoidez, longit. 
0:070-0:080, crassit. 0°034-0:050 millim., paraphyses gracile- 
scentes. Gelatina hymenea iodo cerulescens, deinde lutescens. 
Discovered by Admiral Jones, on the micaceous schist of Ben 
Lawers, Scotland. 
