344 J. 'ff'BSIANA ET J.-E. PLANt'HOlV. (w. NYLANDKR.) 



10. Lecidea sordidula Nyl. — Thallus albidus vel pallido- 

 cinerascens tenuissimus granulatus vel subpulverulento-granula- 

 tus, déterminâtes vel obscure limitatus ; apothecia pallido— testacea 

 (vel interdum pallido-sordida) minuta (latit. mm 2-0 mm ,3) conforta, 

 plana vel convexiuscula , immarginata ; sporse 8" œ incolores 

 oblorigae, obsolète vel tenuiter 1-septatae, longit. mu, ,0U-13, 

 crassit. mm ,0035-0 mra ,00Zi5, paraphyses haud discret». Gelatina 

 hymenea iodo cœrulescens (deinde sordide tincta). 



Villeta, altit. '2000 metr., ad corticem arborum (coll. Lindig. 766). 



Obs. — Affinis est Lecideœ globulosœ Flk. (L. anomalae Fr., L. S. 

 exs., 350), a qua forsan non separanda sit. Sporaa interdum 2-sep- 

 tatae (1). 



11. Lecidea byssomorpha Nyl. — Thallus albus vel albidus 

 byssino-intricatus tenuis; apothecia fusca mediocria plana vel 

 planiuscula (latit. mra ,5-l mm ), intusfuscescentia; sporge 8"* inco- 

 lores oblongœ 3 -septatse, longit. mm , 015-16, crassit. mm ,0G7i-5, 

 paraphyses haud discretse, hypolhecium incolor. Gelatina hyme- 

 nea iodo cœrulescens, thecce apice intensius tinclœ. 



Ad corticem arborum. Choachi, altit. 2600 metr. (sub n° 81 1 admixtam 

 vidi in coll. Lindig.). 



Obs. — Thallus byssinus inaequalis, hinc inde attenuatus vel disconti- 

 nuas ; elementa filamentosa crassit. circiter mm ,0045. Locum habeat haac 

 species in stirpe Lecideœ vernalis, sed thallus maxime differens et versus 

 Byssocaula vergens. — Lecidea thysanola Tuck. comparanda thallum 

 habet album opacum subleprosum ambitu fibrillose byssino-radiantem 



(1) Definitionem hoc loco dare liceat ad stirpem eandem pertinentes Lecideœ 

 phœomelœ Nyl., cui thallus albido-cinerascens tenuis opacus vel subevanescens, 

 apothecia fusca (fusco-pallescentia vel obscuriora) aut nigricantia, planiuscula. 

 satparva (latit. circiter min ,5), intus basi fusco-nigricantia (hymenio pallido) , 

 sporae oblongae (aut breviores aut cylindraceo-oblongoe), (1-) 3-septatae, long. 

 mm ,009-0 mm ,01 7, crassit. miu ,0035, paraphyses gracilescentesparcse, thecae 

 confertaa, hypothecium (lamina lenui) rufofuscescens. Gelatina hymenea vel 

 thecae iodo violacée rubescentes (précédente cœrulescentia levi). Ad rupes 

 calcareas in Cuba (C. Wright), ex hb. Tuckerman. Accedit Lecidea cinerascens 

 Nyl. (Leprieur, Guyan. 212). 



