186 Acta Societatis pro Faiina et Flora fennica, VII. 



thalli. Steritjmata ramosa intricataquc, 0,oo4 0,oo3 millim. crassa, 

 constricte articulata, ccllulis superne depressis aut subglobosis. 

 Pycnoco7iidia oblonga, long. 0,0 3 0,0 3 5, crass. 0,0 oi millim.y 

 recta, apicibus rotundatis. 



2. Sticta. 



Sclirob., Geu. Plaut. II (1791) p. 768 pr. p.; Ach., Licli. Univ. (1810) p 

 m et 445 pr. p.; Del., Hist. Stict. (1825) p. 35 pr. p.; Fr., Lich. Eur. Ref, 

 (1831) p. 49 pr. p.; De Not., Osserv. Stict. (1851) p. 7 pr. p.; Tiil., Mem. Lich 

 (1852) p. 20 et 145 pr. p.; Mass., Mem. Lich. (1853) p. 27 pr. p.; Koerb., Syst 

 Germ. (1855) p. 65 pr. p.; Linds., Mem. Sperm. (1859) p. 191 pr. p.; Nyl. 

 Syn. Lich. (185860) p. 351 pr. p.; Th. Fr., Gen. Heterolich. (1861) p. 57 pr 

 p.; Schwend., Unters. Flecht. II (1863) p. 166 pr. p., tab. IX fig. 2, 3, 4, 7;Tuck. 

 Gen. Lich. (1872) p. 32 pr. p., Syn. North Am. (1882) p. 91 pr. p. Sticta 

 2. Leiicosticta Bab. in Hook. Fl. Nov.-Zel. II (1855) p. 276 pr. maj. p 

 Stictina Nyl., Syn. Lich. (1858 60) p. 333 pr. p. Stictina sect. Cyphellatae 

 Nyl., Consp. Stict. (1868) p. 4. Sticta sect. Cyphellatae Nyl., I. c. p. 6. 



Thallus foliaceus, adscendens, superne et inferne strato cor- 

 ticali pseudo-parenchymatico obductus, inferne rhizinis et cyphellis 

 instructus. Stratum corticale siiperius ex hyphis verticahbus aut 

 subverticalibus formatum, series cellularum plures irregulariter 

 horizontales continens, locuhs majuscuhs aut in seriebus summis 

 minoribus, parietibus (membranis) comparate sat tenuibus aut 

 modice incrassatis. Stratum medullare stuppeum, hyphis implexis, 

 crassitudine mediocribus (circ. 0,oo3 0,oo4 milUm. crassis), mem- 

 branis tenuibus, kimine comparate sat iato. Stratum corticale 

 inferius e seriebus cellularum paucis formatum. Rhisinae ex hy- 

 phis constantes partim subsolitariis, partim fasciculatis et laxe co- 

 haerentibus, pro parte etiam connatis, apice vulgo hberis penicil- 

 latisque. Cyphellae urceolatae, fundo ex hyphis formato consti- 

 patis, conglutinatis, breviter ceUulosis, apice in cyphelloblastos de- 

 mum decidentes constrictis. Cyphelloblasti simphces, decolores, 

 globosi, diam. circ. 0,oio 0,0 4 millim., membrana laevigata aut 

 raro (in St. laevi Wainio) spinulosa instructi, verisimiliter fun- 

 ctione gemmarum conidiorumque praediti (quod autem experi- 

 mentiis adhuc investigatum non est). Gonidia palmellacea (pro- 

 tococcoidea aut forsan etiam pleurococcoidea) et flavovirescentia, 

 aut nostocacea (Bornet, Rech. Gon. Lich. p. 36) et celluhs cae- 

 ruleo-virescentibus vel glaucescentibus, in filamenta brevia, ad 



