Sticta. 187 



instar Polycocci glomeruloso-intricata, moniliformi-concatenatis, 

 in zona infra stratum corticale superius thalli clisposita. Aijothecia 

 marginalia aut supra thallum sparsa, peltata. Exci^mkim strato 

 corticali pseudoparenchymatico, crasso (celiuhs fere sicut in 

 strato corticah thaUi), strato medullari ex hyphis leptoderma- 

 ticis contexto, zonam gonidialem vulgo solum infra stratum cor- 

 ticale ^) continente (in sect. Lecanosticta Wainio et Lecano- 

 stictina Wainio) aut gonidiis omnino destituto (in sect. Eusticta 

 Wainio et Eustictina Wainio). Hypothecium palHdum aut te- 

 staceum. Paraphyses sat arcte aut sat laxe cohaerentes, gelati- 

 nam haud abundantem (in KHO sat laxam) percurrentes. Sporae 

 8:nae aut abortu pauciores, fusiformes aut oblongo-fusiformes, 

 1 7-septatae, decolores aut pallidae fuscescentesve. Concepta- 

 cula pycnoconidiorum thallo immersa (aut raro demum verrucas 

 thallo obductas formantia: in St. Wrightii), pallida, minute pa- 

 renchymatica. Sterigmata ramosa aut subsimplicia, constricte ar- 

 ticulata, articuKs numerosis, brevibus. Fycnoconiclia oblongo- 

 cyhndrica aut apicibus levissime incrassatis, brevia, recta. 



Sect. 1. Lecanostictina ^) Wainio. Goniclia nostocacea. 

 Apothecia gonidia continentia. 



1. St. Ambavillaria (Bor.) Wainio. Lichen Amlavillarius 

 Bor., Voy. d'Afr. III (1804) p. 100 (ex specim. orig. in hb. Mont. : 

 mus. Paris). Sticta Amhavillaria Del., Hist. Stict. (1822) p. 76, tab. 

 6 fig. 21; Stictiyia Nyl., Syn. Lich. (185860) p. 346 pr. p. (conf. 

 MuU. Arg., Lich. Beitr. n. 62). Sticta Lenormandii Kremjoelh., FI. 

 1876 p. 62 (hb. Warm.). 



Thallus irregulariter simpliciter aut iteratim lobatus, lobis 



circ. 35 5 milhm. latis, basin versus saepe angustatis, ambitu 



crenatis aut rotundatis, axilhs vulgo angustis, superne impresso- 



inaequahs rugosusque, plumbeus vel livido-fuscescens aut glauce- 



scens, soredns isidiisque destitutus, subtus pallescens, tomento 



rhizineo crebro aut sat crebro, longitudine mediocri, cyphelhs 



^) In >S^. Wrightii Tuck. gonidia etiam infra liypothecium parce aclsunt. 



^) In sect. Lecanosticta Wainio apothecia item gonidia continent, at go- 

 nidia thalli apotheciorumque sunt palmehacea. Huc pertinent St. patiila Del. 

 et St. caperata Nyl. et St. Wrightii Tuck. Cyphellis a Parmostictis Nyl. et 

 Bicasoliis De Not. differunt. 



