— 120 — 



Ad terram nudam. 



73. Pertusaria verrucosa (Fée); Tnjpotlielium ver- 

 rucosum Fée Ess. p. 66; tab. XVIII flg. 3. 



Ad cortices. 



74. Pertusaria decussata Krphb. sp. n. 

 Thallus parvus cinerascens vel albidus, tennis 



aut teniiissimus, continuus, linea nigricante irregu- 

 lariter cinctus, plernraqne specimina pin ra confluen- 

 tia, corticem obtegentia, i taque thallum unicum a 

 lineolis nigricantibus irregulariter decussatnm efYor- 

 mantia- apothecia sat parva, unum vel 2—3 in 

 prótuberantiis thallinis (lat. vix 0,6 -0,7 rain.), pa- 

 rum prominitlis inclusa, numerosa, aggregata vel 

 gregatiiri disposita, rarius dispersa, ostiolis punc- 

 tiforrnibus nigricantibus, haud prominitlis; sporae 2 

 nae in íhecis, lóng. 0,66 -0,77, crass. 0,28— 0,30 mm. 



Ad corticem laevigatam ramorum, rion raro. 



Species párvula, sed jam apotheciis numerosis 

 minutis nigro-ocellatis et thallo lineolis nigris an- 

 gustis irregulariter decussato conspicua. Pert. tlie- 

 iocarpoides Njl., praesertim vero P. albideUa Nyl. 

 videntur aíFines. 



75. Pertusaria chiodectonoides Fée Ess. p. 67, 

 tab. XIX fig. 7 sub TrypetheUo; Supplem. p. 73 

 sub Pertusaria. 



Ad corticem arborum (Cebil) in silvis prope 

 Oran. 



Sporae 2 in asco, bicolores, forma sólita in ge- 

 nere, long. 0,074—077, crass. 0.028-030 mm. 



76. Pertusaria melanostoma Krph. sp. n. 

 Thallus lacteus, tenuissimus, inaequalitates sub- 



strati continué sed irregulariter obducens, determi- 

 natus; apothecia numerosa, porinoidea, se. ver rucas 

 hemisphaericas vel mammillosas, thallo concolores, 

 prominulas (lat. circ. 1,3—1,4 mm.) eíformantia-, 

 hae verrucae plerumque monopjrenae, ostiolis 1—4 

 minutissimis, atromarginatis vel prominentiis levi- 

 bus minutis, roiundis, nigris, integris aut perforatis 

 in vértice instructae* sporae 4—8, solitae generis. 

 hjalinae, quoad magnitudinem valde variantes, long. 

 0,048-072, crass. 0,019-030. 



