814 Transactions.— Botany. 
Thallus widely spread, cartilagineous, whitish or greyish-white, rimuloso- 
areolate, with numerous or very crowded (then flattened) subglobose 
deformed verruce, furnished with gonidia in every part. Apothecia several 
included in each verruca (proper excipulum none), at first covered by the 
thallus, at length open, the irregular discs often flowing into a pseudo-dise ; 
epithecium brown, paraphyses very slender, twisted. Spores four in each 
ascus, simple, ellipsoid, grumose-granulose, pale yellow; epispore thick, 
length ‘082 mm., breadth ‘04 mm. 
On rocks. 
Fig. 2. Dises of apothecia on verruca magnified 14 diameters. 
2. a, Section of verruca magnified 14 diameters. 
2. b, Four spores, with paraphyses, magnified 300 diameters. 
Lecidea littoralis, Knight. 
Thallus cinereo-albidus v. cinerasceus crassus continuus v. areolatus 
late expansus levis. Apothecia adnata majuscula (latit. 2-65 mm.) sparsa 
atra pruinosa tenuiter marginata deinde tumidula et difformia, margine atro 
flexuoso v. lobato v. lobato inciso. Spore simplices ellipsoidez, longit. 
013 ad :018 mm., crassit. 006 mm. MHypothecium fuscum v. linea atra 
hypothecii latera et basim cireumseribens. 
Ad saxa. 
Thallus ashy-white or grey, thick, continued or areolate, widely spread 
out, smooth. Apothecia adnate, rather large (2°65 mm. across), scattered, 
black, pruinose; margin thin, black, at length raised, deformed, flexuose or 
lobed or labato-incised. Spores simple, colourless, ellipsoid, length -013 ad 
‘018 mm., breadth 006 mm. Hypothecium brown, or circumscribed at the 
sides and base by a black line. 
On rocks. 
Closely allied to Lecidea albo-carulescens, Wulff, and L. contiqgua, Hoffm. 
Fig. 3 and 3 a, Apothecia magnified 14 diameters. 
8 b and 3 c, Ascus, spores, and paraphyses, magnified 300 diameters. 
Lecidea subglobulata, Knight. 
Thallus cinerascens minute furfuraceo-diffractus vy. squamuloso-areo- 
latus, granulis gonimis viridibus. Apothecia immarginata interdum con- 
fluentia, disco atro convexo tandem hzmispherico v. subglobuloso. Spore 
in ascis ventricosiusculis simplices ellipsoideze subhyaline tandem dilute 
lutew, longit. -018 ad -022 mm., crassit. ‘007 mm. MHypothecium atrum 
v. fuscum. 
Ad saxa. 
