204 Acta Societatis pro Fauna et Flora feniiico, YIT. 



Thalhis squamosus aut fere foliaceus, adprcssus aut adsccn- 

 dcns, supcrne strato corlicali instructus, giabcr, inferne strato 

 corticali destitutus aut solum evanescentc instructus, hypothallo 

 maxima parte nigricante vcl caeruleo-nigricante, vulgo bene evo- 

 luto crebroque vel raro minus cvoluto aut interdum rhizinis (in 

 P. Mariana Miill. Arg.) nigricantibus substrato affixus. Stratum 

 cortkale superius ex hyphis verticaHbus parenchymatice septatis 

 conglutinatis formatum, series plures irregulariter horizontales con- 

 tinens, loculis majuscuKs, parietibus vulgo tenuibus. Stratum- 

 meduUare stuppeum, hyphis sat laxe contextis, circ 0,oo2 0,oo35 

 milhm. crassis, leptodermaticis, parce septatis. Gonidia nosto- 

 cacea (Bornet, Rech. Gon. Lich. p. 36), celluhs caeruleo-virescen- 

 tibus aut glaucescentibus, monihformi-concatenatis, filamentis ad 

 instar Polycocci glomeruloso-intricatis, in zona infra stratum 

 corticale disposita. Apotliecia thallo innata, demum elevata pel- 

 tataque, excipulo thallode basi constricto instructa. Excipulum 

 strato corticali crasso, grosse pseudoparenchymatico, strato 

 medullari gonidia continente, perithecio grosse parenchymatico 

 infra hypothecium modice evoluto. Hypothecium albidum paUi- 

 dumve aut dilute rufescens. Sjoorae 8:nae ^), elKpsoideae oblon- 

 gaeve aut fusiformi-ellipsoideae, simplices, decolores. ^fioncepta- 

 cula p)ycnoconidioruni verrucas thallo obductas formantia, intus 

 pallida. Sterigmata articulata, celluHs brevibus numerosis. Pycno- 

 conidia cyHndrico-oblonga, recta.'' (Linds., Mem. Sperm. 1859 p. 

 256.) 



1. P. rubiginosa (Thunb.) Del. in Dict. Class. Xin (1828) 



p. 20: Mass., Eic. Lich. Orost. (1852) p. 110: Tuck., Syn. North 

 Am. (1882) p. 119 (excl. b. conoplea); NyL, Syn. Lich. II (1885) 

 p. 29 (excl. V. conoplea). Lichen rubiginosus Thunb., Prodr. FL Cap. 

 (1794) p. 176 (hb. Ach.); Ach., Lich. Suec. Prodr. (1798) p. 99. 

 Pann. ruhiginosa a. affinis (Dicks.) Koerb., Syst. Germ. (1855) p. 105. 



Thallus irregulariter repetito-laciniatus, laciniis circ. 2 0,5 



milUm. latis, vulgo subcuneatis, ambitum versus stellatis, saltem 



pro parte elongatis, adpressis, paUidus aut cinereo-pallescens aut 



paUido-glaucescens, isidiis destitutus, subtus nigricans aut ambi- 



tum versus pallescens et hypothallo caeruleo-nigricante vel cine- 



reo-caerulescente vel partim subalbido tomentoso instructus. Ap)0- 



^) De Famiaria polyspora MiilL Arg. vidc sub Heppia p. 216. 



