452 THALLOPHYTES 



6O9. VERRICA RIA, Pers. 



[Latin, Fferruca, a wart; from the wart-like processes on the thallns.] 

 Perithecia hemispherical-globose, solitary, horny, black, closed, 

 with a simple or papillaeform ostiole, sometimes becoming sub- 

 scutellaeform, or rarely inclosed in a thalline verruca. 



1. V. elaeochroa? Tuckerm. [Olive-colored]: Crust ap- 



planate, rimose-areolate, olivaceous ; perithecia with a wide base, 



globose, emerging and conical at apex, becoming depressed and 



umbilicate. 



Hob. On limestone rocks : frequent. 



Obs. There seems to be some obscurity about this plant ; but I 

 cannot tell where else to place it. Perhaps it may prove to be 

 V. nigrescens, Pers. 



%. T. CestrenslS, Tuckerm. MS. [Chester'] : Crust conspicu- 

 ous, chinky, dark blackish- green ; perithecia dimidiate, the base 

 inflexed, much covered by the thallus, but prominent, globose- 

 hemispherical ; nucleus globose, whitish. 

 Sab. On trunks of Fagus ferrttginea. 



Obs. This fine new species appears to be quite rare, here. 



3. V. 11 it id a, Schrad. [Shining]: Crust smooth, greenish - 

 olivaceous, or fuscous ; perithecia entire, covered, at length some- 

 what prominent, persistent, the ostioles subpapillate ; nucleus 

 fluxile. 



Hah. On trunks, especially Beech (Fagus ferrugined). 



4. V. alba, Schrad. [ White] : Crust innate in the matrix, be- 

 coming at length denudate, white; perithecia subglobose, entire, 

 denudate, persistent, immersed at the base, ostiole papillate, or 

 pertuse. 



Hob. On trunks. 



ft. V. greinmata, Ach. [Budded]: Crust innate, effuse, smooth- 

 ish, white-hoary; perithecia hemispherical, dimidiate (not im- 

 mersed at base), persistent ; nucleus whitish. 

 Hob. On trunks. 



6. T. punctinVrmis, Pers. [Dot-like'] : Crust innate in the 

 matrix, or obsolete ; perithecia innate-superficial, semiglobose, sub- 

 dimidiate, the base inflexed ; nucleus globose. 

 Sab. On trunks with smooth bark. 



1, T. lactea, Ach. MS. [Milky] : Crust innate, effuse, white; 

 perithecia innate-sperficial, dimidiate, sub-conoidal, inflexed at 

 base. 

 Sab. On trunks of trees. 



Obs. This is a Southern Lichen, and appears to be very rare in 

 our district. 



TRIBE 3. TRYPETHELIA'CEAE. 



Apoihecia verrucaeform, formed of the thallus, ostiolate-pertuae, containing >u 

 ono or more perithecia a deliquescent nucleus. 



