JONES — OX THE IRISH LICHENS. 133 



No. 151. — Demesne, Armagh. T. J. 

 Mr. Carroll thinks this (No. 151) perhaps 

 a form of P. saxatilis. 



No. 156. — Parmelia ? Demesne, Armagh. T.J. 



Mr. Carroll thinks, a state of P. obscura. 



Peltigera ( Willcl.). 



No. 22. — Peltigera polydactyla (Hoffm.). Rocks south of Woburn, Co. 

 Down. T. J. 

 No. 241 Old Dromore, Co. Kerry. T. J. 



Pertusaria (DC). 



No. 208. — Pertusaria communis (DC). Curraghmore. T. J. 

 No. 209— Curraghmore. T. J. 

 No. 211 — Curraghmore. T. J". 

 No. 212. — Curraghmore; form. T.J. 

 No. 213. — Pertusaria fallax (Ach.). Form. Curraghmore. T. J. 



No. 214. — Form. Curraghmore. T. J. 

 Nos. 213 and 214 are imperfect forms of 

 P. fallax, var. Wulfenii, DC, fide Ny- 

 lander. 



No. 205. — Pertusaria globulifera (Booh.). Curraghmore. T. J. 



No. 210.— Curraghmore. T. J. 



Though the apothecia are not present, this 

 is the form of Variolaria globulifera, 

 having a radiate border, which overruns 

 moss and Jungermannia on trees to a 

 wide extent. 



No. 216. — Pertusaria leioplaca (Schcer.). Curraghmore. T. J. 



*No. 335. — Pertusaria nolens (Nyl.). Glenarm, on basalt. T. J. 



See my No. 1534. In the beginning this 

 plant may be supposed to be Urceolaria ; 

 but the urceolarian appearance is of short 

 duration. There are no prominent warts, 

 as in Pertusaria ; but the nuclei are in 

 masses, as in Pertusaria, and the open- 

 ings are irregular in form ; though the 

 urceolarian appearance passes away, the 

 opening of the thallus continues to show 

 a white pulverulent margin. Inte- 

 riorly the plant is altogether a Pertusaria 

 in asci, spores, and paraphyses, eight 

 ovate spores in each ascus, measuring 



