of Edinburgh, Session 1881-82. 
461 
sporae 9-11 /x longae, 5-5 \ /x latse. — Ad L. orosteam accedens. — 
Quartzicola, frequens : B.C.S. et Schweinf. 
Lecanora socotrana /. livido-nigricans, Mull. Arg . : discus 
apotheciorum e fuscescente livido-nigricans. — •Cum forma gen uina 
speciei : B.C.S. 
Rinodina substellulata, Mull. Arg. : tliallus obscure cinereus, 
tenuis, areolato-rimosus, areolae contiguae, planae, leves, opacae ; 
apothecia adpressa, -J-J mm. lata, plana, margo lecanorinus, demum 
fere lecideinus, discus madef actus et junior fuscus ; hypothecium 
hyalinum ; sporae 15-20 /x longae, 9-11 /x latae, 2doculares, fuscae. 
— Quodammodo Buelliam stellulatam simulans. — Quartzicola: 
Schweinf. 
Rinodina granularis, Miill Arg. : tliallus crebre granulari-sub- 
areolatus, albidus, areolae valde exiguae, angulosae, convexae, leves, 
centro monocarpicae ; apothecia J-A mm. tantum lata, immersa, 
vertice haucl emergentia et ipsa areola late albido-marginata, discus 
fuscus ; hypothecium e fuscescente demum hyalinum ; sporae 
octonae, 11-12 fx longae, 5-6 fx latae, biloculares et fuscae. — Valde 
minutula, primo intuitu crustam sterilem granularem simulans. — 
Calcicola : B.C.S. 
Pertusaria schizostoma, Mull. Arg. : thallus albescenti-flavus, 
continuus, minute rugulosus, undique minutissime ulcerato-puncti- 
culatus, verrucae 1 J-1J mm. latae, hemisphaericae, gibboso-irregulares, 
vertice depressae, 5-7-carpicae, ostiola e punctiformi oblongata ; sporae 
geminatae, 130-190 /x longae, 50-89 jx latae, intus valide costulatae. — 
Ramulicola : B. C. S. 
Pertusaria subflavens, Miill. Arg. : thallus sulphureo- havens, 
tenuis, rugulosus, verrucae hemisphaericae, sat regulares, monocarpicae, 
1 mm. latae, opacae, ostiola hand emergentia, cum thallo concoloria, 
demum obscure carnea ; sporae in ascis 2 y. rarius 1, 110-130 /x 
longae, 55 /x latae. — Ramulicola : Schweinf. 
Pertusaria cicatricosa, Miill. Arg. : eadem est ac P. communis 
v. neo caledonica JSTyl. : thallus flavescenti-albidus, rugulosus ; ver- 
