214 III. VERRUCARIOIDEI. 13. VERRUCARII. 



(macularis) 



viridis , in maculas orbiculares saepe effusus , interdum 

 dendritice effiguralus. Apothecia hemisphaerica , sessilia ; 

 osliolo papillato, tandem pertuso. Spic. 333. — Ad saxa 

 varia locis umbrosis. 



a.' contigua Schaer ; thallo tenui , in maculas orbicu- 

 lares effuso. Spic. 334. Exs. 524. 



^. striatula (Verruc. striatula Wahlenb. in Ach. meth. 

 suppl. p. 21) ; thallo crassiusculo , dendritice effigurato 

 vel in frustula disjecta soluto. Spic. 334. 



•y. acrotella (Verruc. acrotella Ach. meth. 123) ; 

 thallo dilapso. Spic. 334. Lich. acrotellus. E6. 

 t. 1712. 



3. Verrucaria rudis (Borr. inEB. suppl. 1. 1. 2637. 

 f. 2). Thallus subgelatinosus , tenuis, contiguus, granulis 

 cinereis vel nigrescentibus conspersus , effusus. Apothecia 

 irregulariter globosa , minutissima , sessilia (prominentia) ; 

 ostiolo subimperforato. — Ad trabes et Quercus annosas 

 Brittanniae rara Borr; in coll. Salw. — Cum Verruc. 

 biforme el olivacea comparat Borr; mihi quoad genus 

 suspecta. 



§. 2. Thallo tartareo. 



4. Verrucaria mollis (Tayl. in Mack. hib. II. 97). 

 TAaZ/MS subtartareus , mollis , crassiusculus , rubigineo-fuscus 

 vel pallide fuscescens, ruguloso-areolatus, effusus. Apothecia 

 hemisphaerica , minutissima , sessilia , aggregata ; ostiolo 

 papillato , integro. — Ad rupes Hiberniae in m. Carig , 

 comitatus Kerry Tayl! in coll. Salw. — „ThaIIus sub- 

 tarlareous , soft , powdery, or minutely granulate, rusty 

 brown , finely oracked into minute flat heaps : inderminate ; 

 with a thin , black , subslralum ; apothecia very minute , 

 numerous , irregulary aggregated , black , not polished " 

 Mack. I, c. 



5. Verrucaria macrostoma (Duf! in DC. fran(j. II. 

 p. 319). Thallus tartareus , crassus , fuscus , diffracto- 

 areolatus areolis planis , determinatus. Apothecia conica , 

 ampla, thalli areolis innata , ad basin dilatata ; ostiolo papil- 

 lato , tandem pertuso. — Ad muros calce junctos saxaque 

 calcaria in pago Neocomensi, Valeyres, Boissier! in Gallia 



