Verrucaria. 



7. VERRUCARIA stigmatella : crusta temiissima mem- 

 branacea laevi subnitida cinerascente 3 tuber- 

 culis minutis convexis papillatis nigris, 

 Lichen stigmatelius Lich. Pr. p» 1 5 Verru^ 



caria cinerea, PERS. in Ust. Ann. d. Bot. 



St. 7. p. Qgt 

 Icon. Pers. i. c, T. 3. f. 6. A. Schrad. Spic- 



T- 2. f. Q. qua Sporas. 

 Habitat ad corticem fruticum & ramos arbo- 



rum semimortuarum. 



Obs. Tubercula in hac Specie quamvis omnia ml- 

 nuta 8C coriferta, diversae tamen sunt rnagnitudinis 

 8C variant plus minus convexa I. kernisph&rica. 

 Differt a Verrucaria sticYica in eo prascipue, quod 

 tubercidorum basis a crusta formata vei omnino 

 circumsepta sit. 



(i. V. atomaria: crusta tenuissima laevigata 

 cinereo - glaucescente ; tuberculis plano-con- 

 vexis umbiiicatis nigricantibus. 



Lichen atomarius Lich. Pr. p. 16, 



Habitat in ccrtice Fraxini. 



Obs. Tubercula raro convexa, frequenter planiii- 

 scula medio impressa 1. urnbilicata. Forte eadem 

 ac Liclien puncfiformis Schrank FI. Bav. Gmel. 

 S. L. (Lich. crypheus Lich. Sv. Pr. p. ig.) 



y. V. Tremules: crusta aiba inaequabili rimu- 

 losa; tuberculis minutissimis confertissimis 

 planiusculis umbiiicatis atris. 



Habitat in cortice Populi Tremulae. SwARTz. 



Obs. Tubercula ob minutierri vix nirdis oculis ob- 

 servanda, extra crustarn pamm protuberantia 8C hac 

 circumcintta sunt. 



g. VERRUCARIA melaleuca: crusta crassiuscula al- 

 ba subnitida; tuberculis sparsis hemisphaericis 

 papillatis nigris. f 



Lichen 



