Pseudocyphellaria. 183 



TJiallns foliaceus, adscendens aut raro fere adpressus, su- 

 perne et inferne strato corticali parenchymatico obductus, inferne 

 rhizinis et pseudocyphellis instructus. Stratum corticate superius 

 ex hyphis verticalibus vel subverticalibus formatum, series cellu- 

 larum plures irregulariter horizontales continens, loculis majusculis 

 aut in seriebus summis minoribus, parietibus (membranis) com- 

 parate sat tenuibus aut leviter modiceve incrassatis. Stratum 

 medullare stuppeum, hyphis implexis, crassitudine mediocribus 

 (circ. 0,0 4—0,0 3 millim. crassis), membranis tenuibus, lumine 

 comparate sat lato. Stratum corticate inferius e seriebus cellu- 

 larum paucis formatum. Bhizinae ex hyphis constantes par- 

 tim subsolitariis, partim fasciculatis et laxe cohaerentibus, pro 

 parte etiam connatis, apice liberis penicillatisque. Pseudocyphellae 

 maculae- vel verrucaeformes aut leviter urceolatae, fundo decor- 

 ticato (formato e strato medullari crebrius contexto), soredia 

 parce formantes. Gonidia palmellacea (protococcoidea aut forsan 

 etiam pleurococcoidea) et flavovirescentia, aut nostocacea (Bornet, 

 Rech. Gon. Lich. p. 36) et cellulis caeruleovirescentibus vel glau- 

 cescentibus moniliformi-concatenatis, filamentis ad instar Poly- 

 cocei glomeruloso-intricatis, in zona infra stratum corticale su- 

 perius thalli disposita. Apothecia marginalia aut supra thallum 

 sparsa, peltata. Excipulum strato corticali pseudo-parenchy- 

 matico, crasso (cellulis fere sicut in strato corticali thalli), strato 

 medullari ex hyphis leptodermaticis contexto, zonam gonidialem 

 solum infra stratum corticale continente (in sect. Parmosticta 

 Nyl. et Parmostictina Nyl.) aut gonidiis omnino destituto (in 

 sect. Lecidosticta Wainio et Lecidostictina Wainio). Ey- 

 pothecium pallidum aut albidum. Paraphyses sat arete cohae- 

 rentes, gelatinam haud abundantem (in KHO sat laxam) percur- 

 rentes. Sporae 8:nae aut abortu pauciores, fusiform es aut fusi- 

 formi-oblongae, 1 — 5-septatae, fuscescentes aut decolores. Con- 

 ceptacula pyenoconidiorum thallo immersa, pallida (aut lutea al- 

 bidave), minute parenchymatica. Sterigmata ramosa aut subsim- 

 plicia, constricte articulata, articulis numerosis, brevibus. Pyc- 

 noconidia oblongo-cylindrica [aut apicibus levissime incrassatis?], 

 brevia, recta, tenuia. 



1. P. aurata (Ach.) Wainio. Sticta aurata Ach., Meth. Lich. 

 (1803) p. 277 (hb. Ach.); Del., Hist. Stict. (1822) p. 49 (tab. 2 fig. 



