of Edinburgh , Session 1881-82. 
469 
lata, tota extus intusque alba, albo-farinosa ; sporae octonae, 75 g 
longae, 18 g latae, 8-loculares, loculi semel v. bis cruciatim divisi. — 
Corticola : B.C.S. 
Arthothelium emersum, Mull. Arg. : thallus albus, tenuissimus, 
laevis, subfarinulentus ; apotbecia J-f mm. longa, orbicularia v. 
dimidio longiora quam lata, atra, nuda, depresso-convexa ; sporae 
octonae, 15-17 g longae, 7-9 g latae, ovoideo-fusiformes, 6-loculares, 
loculi nonnulli longitrorsum semel divisi. — Truncicolum : B.C.S. 
Enterographa affinis, Mull. Arg. : thallus tenuiter tartareus, 
gleboso-inaequalis, argillaceo-cinereus ; apothecia immersa, ore orbi- 
cularia v. elliptica v. irregulariter angulosa, plana, nuda, atra, 
madefacta atro-fusca, circ. -|oo mm * lata; perithecium tenuissimum, 
olivaceo fuscum, basi deficiens; lamina undique hyalina ; sporae 
8-nae, 20-23 g longae, 4-5 g latae (sc. absque halone), 6-loculares. — 
Corticola: B.C.S. 
Enterographa lactea, Mull. Arg. : thallus cum verrucis apothe- 
ciigeris lacteo-albus, tenuis, polito-levigatus, nitidulus ; verrucae 
\ mm. latae, orbiculares, obtuse angulosae, leviter convexae; apothecia 
sparsa, haud emergentia, mm. lata, regulariter orbicularia, 
nigra, nuda ; perithecium lateraliter tenuissimum, fuscum, basi 
deficiens ; sporae 8-nae, 23-28 g longae, 4 g latae (sc. absque halone), 
8-10-loculares, loculi subaequilongi. — Corticola: B.C.S. 
Enterographa fratercjulans, Mull. Arg. : thallus crassiusculus, 
leviter albo-flavicans, verrucae thallinae subirregulariter orbiculares, 
depresso-hemisphaericae ; apothecia in centro verrucarum conferta, 
2 V mm. lata, immersa et leviter depressa, demum magis sensu 
radiali verrucarum oblongata, pro parte confluentia, fusca, nonnihil 
cinereo-pruinosa, perithecium tenue, fuscum, basi deficiens ; sporae 
8-nae, dactyloideae, 24-27 g longae, 6-8 g latae, 3-septatae. — Corti- 
cola : B.C.S. 
Minksia, Mull. Arg. gen. nov. 
Thallus crustaceus, areolatus, areolae demum pro parte verruci- 
formes et fertiles, gonidia chroolepoidea ; apothecia in verrucis 
thallinis sita, gymnocarpica, perithecium simplex, proprium, immer- 
