KUNOL. SV. VET. AK AD EMIENS HANDLTNGAR. BAND 57. N:0 6. 



29 



Pertusaria corrugata Darb.! in Wiss. Ergebn. Schwedisch. Südpol. -Expedit., 

 vol. IV, Liefrg. 11, 1912, p. 6 et p. 27, tab. I, fig. 10. 



f. phaeizans A. Zahlbr. nov. f. 



A typo differt apotheciis pallidis. 

 Thallus epilithicus, crustaceus, uniformis, tartareus, effusus, ad 0,5 mm crassus, 

 passim excrescens et dein usque 2 mm altus, lutoso-albicans, KHO purpurascenti- 

 lutescens, CaCJoOo — , areolato-rimosus, areolis contiguis, superne corrugato-inaequalibus, 

 fissuris tenuibus, sed altis limitatis, sorediis et isidiis destitutus, protothallus distinctus, 

 angustus et tenuis; Stratum corticale tenue, ex hyphis dense intricatis et inspersis 

 formatum; gonidia glomerata, glomerulis plus minus dispersis vel confluentibus, cel- 

 lulis laete viridibus, globosis, rarius subellipsoideis, 4 — 7 latis; hyphae thalli in 

 strato gonidiali KHO sanguineae; medulla alba, KHO—, CaCLOo— , J— . 



Apothecia crebra, verrucas apotheciigeras distinctas non formantia, lecanorina, 

 immersa, rotunda vel difformia, plus minus approximata, usque 1 mm lata; discus 

 ceraceo-testaceus, madef actus magis fuscescens (in planta typica niger et opacus); 

 excipulum distinctum non evolutum ; bymenium decolor, 200 — 250 \i altum, superne 

 anguste olivascens et KHO in rufescentem vergens, caeterum decolor, non inspersum, 

 J coeruleum; paraphyses densae, filiformes, ad 1 [x crassae, eseptatae; asci hymenio 

 fere subaequilonges, oblongo-clavatae, ad apicem rotundati, recti vel curvati, 8-spori ; 

 sporae in ascis subbiseriales vel uniseriales, decolores, simplices, ovales vel ovali-ellip- 

 soideae, 44—58 \>, longae et 20—30 ;j. latae, membrana duplici, 3,5 — 4 [j. crassa, laevi. 



Conceptacula pycnoconidiorum immersa, vertice nigricanti, punctiformi, vix 

 prominulo; perifulcrium pallidum; fulcra exobasidialia, basidiis subampullaceis vel 

 subcylindricis, fastigiatis, pycnoconidiis brevioribus; pycnoconidia filiformia, subrecta 

 vel subcurvata, utrinque retusa, 23 — 28 jj. longa et ad 1 \j. lata. 



Falkland-Inseln: Westinsel, Port Philomel, Halfway Cove, auf Sandstein. 



Pertusaria cerebrinula A. Zahlbr. nov. spec. 



Thallus epilithicus, crustaceus, uniformis, valde tenuis, 0,2—0.24 altus, late effu- 

 sus, ochraceo-cinerascens, opacus, KHO lutescens, CaC] 2 0 2 — , ex areolis formatus 

 minutis, 0,2 — 0,8 ( — 1) mm latis, subangulosis, leviter convexis, superne inaequalibus, 

 plus minus congestis, rarius subdispersis, isidiis et sorediis destitutus, in margine 

 linea obscuriore non cinctus, superne strato corticali angusto, ex hyphis dense intri- 

 catis formato obductus; medulla alba, J — , hyphis inspersis; gonidia laete viridia, 

 cellulis globosis, 7 — 14 y. latis. 



Verrucae apotheciigerae sessiles, ad basin constrictae, dispersae vel approxi- 

 matae, turgidae, magnae, usque 4 mm latae et usque 2 mm altae, thallo pallidiores, 

 albidae, opacae, ad verticem crasse et profunde gyroso-plicatae, hymenia plura (6- — -8) 

 includentes, KHO flavidae, CaCLOo — , strato corticali obductae, Stratum gonidiale 

 angustum, infra corticem situm et medullum sat amplam includentes; disci apothe- 

 ciorum nigricantes, impressi, punctiformes vel breviter rimaeformes; hymenium superne 

 nigrescens, KHO violascens, passim strato decolore angusto supertectum, caeterum 



