96 CELLULOSE. 



264. A. swartziana, Ach. Swartzian Arthonia. On Alder trees 

 in Ballyphehai.e bog: Mr. Alexander. rather rare. 



435. OPEGRAPHA, Ach. OPEGRAPHA. 



265. O. epipasta, Ach. Smooth Opegrapha. On the bark of Ash 

 trees in the Great Island: Dr. Wood; Dr. Scott. rather common. 



266. O. rufesce.is, Pers. Rusty Opegrapha. Dunscombes wood: 

 Mr. Alexander. rather rare. 



267. O. atra, Pers. Black Opegrapha. Shanakiel and on trees 

 common. 



268. O. vuloata, Ach. Common Opegrapha. Great Island : Dr. Scott 

 On Oaktrees at Castle Bernard: Mr. Alexander. rather common. 



269. O. betulini, Pers.? Birchbark Opegrapha. Great Island : Dr. 

 Scott. And on Birch trees occasionally. rather rare. 



270. O. varia, Pess. Variable Opegrapha. Vernonmount, and on 

 Birch trees occasionally. rather rare. 



271. O. saxatilis, D.C. Stone Opegrapha. Gill Abbey and on 

 rocks. common. 



272. O. scripta, Ach. Blackletter Opegrapha. Lota, and on trees 

 throughout the county. common. 



273. O. dcntritica, Ach. Treelike Opegrapha. On trees at Kil- 

 brittain near Bandon : Mr* Alexander. rather common. 



Tribe IV. Verrucariete. 



436. VERRUCARIA, Pers. VERRUCARIA. 



274. V. nitida, Schrad. Waxlike Verrucaria. Lota. common. 



275. V. der-matodes, Borr. Vellum Verrucaria. On trees about 

 Bantry : Miss Hutchins. very rare. 



276. V. cinerea, Pers. Grey Verrucaria. Vernonmount common. 



277. V. epidermidis, Ach. Birch Verrucaria. On Birch trees 

 about Bantry and Glengariff : Miss Hutchins. rare. 



278. V. olivacea, Pers. Olive Verrucaria. On young Ash near 

 Bandon : Mr. Alexander. rather rare. 



279. V. rhyponta, Ach. Blackstain Verrucaria. On Holly bark at 

 Kilbrittain near Bandon : Mr. Alexander. rare. 



280. V. gemmata, Ach. Largefruited Verrucaria. Lota common. 



281. V. rupestris, Schrad. Rock Verrucaria. On limestone about 

 Blackrock, and Inchigaggin near Cork common. 



282. V. concinna, Borr. Nice Verrucaria. Rocks near Cork : 

 Dr. Wood. I have not met it, and suppose it rather rare. 



283. V. eleeina, Borr. Olivegreen Verrucaria. Weirs at Sundays 

 Well near Cork : Mr. Alexander. Bantry : Miss Hutchins. rare. 



284. V. mural-is, Ach. Wall Verrucaria. Gill Abbey. common. 



285. V. epipol&a, Ach. Largefruited Verrucaria. On limestone 

 rocks at Ballinlough and about Cork. common. 



286. V. trachona, Ach. Green Verrucaria. Rocks near Bantry : 

 Miss Hutchins. I have not met it, and it is noticed by no other. 

 very rare. 



287. V. maura, Ach. Blackmoor Verrucaria. By the coast in 

 various places, on rocks of all kinds. common. 



