330 J. TKIANA ET J.-K. PLANCUON. ( W. NYLANDER.) 



Ad cortices arborum in sylvis. La Mesa, altit. 2300 metr. (coll. Lindig. 

 2678); Fusagasuga, altit. 2200 metr. (ead. coll. 2777); Bogota, altit. 

 2600 metr. 



Var. cathomalizans Nyl. Thallus albidus tenuissimus glaber vel macula 

 albida lactea indicatus ; apothecia nigra, punctis nigris minutissimis per- 

 foratis indicata, ostiolis firmis (diam. circiter mm ,05), prominentiis nul- 

 lis vel obsoletis inclusa, conceptaculo supra nigro, haud conferta; sporae 

 8 niE incolores ellipsoidese pluriloculares (vel circiter 8 seriebus 3-/i-locu- 

 lares vel inordinate murali - loculosse ) , longit. mD \036-/il, crassit. 

 mm , 011-17 (iodo haud tinclae). — Ad cortices, altit. 2500 metr. (coll. 

 Lindig. 857). — Apothecia parte immersa (hymeniali), latit. circiter 

 ram ,4. Nonnisi statum sistit minus evolutum Thelotrematis leucomelani. 



12. Thelotrema. monosporum Nyl., Lich. Nov. Caled., p. 46, 

 var . patulum Nyl. — Thallus albidus vel albus tenuissimus opacus 

 determinatus; apothecia denudata (aperla) csesiopruinosa innata 

 (latil. circiter Ô mm ,5), margine proprio parum elevalo, thallino 

 firmo prominulo ; sporce 1-4 in thecis (saepius 2 nœ ) fuscœ oblongse 

 murali-divisœ, ïongit. mm ,058-0 mm ,130, crassit. mm , 020-27 

 (iodo vix (inctae). 



Cune, altit. 1200 metr., ad cortices arborum (Al. Lindig) (1). 



(I) Facie externa haud parum convenit Thelotrema lepadodes Tuck. Observ. in 

 Proceed, Amer. Acad., 1862, p. 404, cui vero thallus albus tenuis vel tenuissi- 

 mus opacus granuloso-inaequalis subeffusus; apothecia prominula, margine 

 receptaculari erecto-annulari truncato mediocri (latit. fere 1 millim. adtingente, 

 ait. circiter mm , 25), epithecio pallido caesio-pruinoso, margine proprio demum 

 evanescente ; sporse incolores vel demum fuscae 4-8 nœ submurali-divisae (trans- 

 versim loculis 18-22 et his adhuc sensu longitudinali divisis), longit. mm ,04o- 

 80, crassit. mm ,012-18 (iodo vix cœrulescentes). Ad cortices in Cuba 

 [G. Wright, exhb. Tuckerm.). Apotheciis omnino aperlis et sporis dignoscen- 

 dum ; extus cum Th. diplotrematc comparandum, sporis autem fere cum 

 Th. conformi Fée, hae tamen magis murali-divisee et multo majores in Th. lepa- 

 dodc. — Th. spondaicum Nyl. Thallus macula pallida indicatus vel albidus 

 rugulosus ; apothecia mediocria (prominentiis thallinis prominulis) irregularia, 

 epithecio nigricante, ostiolo rotundato vel angustato ; thecae 2-sporae, sporae 

 nigrescentes murali-divisae, longit. mm , 1 1 0-1 45, crassit. mm , 040-45 (iodo 

 cœrulescentes). Ad corticem arboris in Cuba (C. Wright), ex hb. Tuckerman. 



