PYEENULACEAE. 525 



2. ABTHOPYEENIA Mass. 



Spores two-celled. 



Ascl cylindrical, spores unlseriate. 



Spores 15-30x7-13 a. 1. A. gemmata. 



Spores 12-15 X 5-7 ». 2. A.Mformis. 



Asci clavate, spores 2- to 3-serlate. 

 Peritheeia spreading at the base. 



Perithecia peltate, flattened, and thalline-sutfused. 3. A. planorbis. 

 At least the center of the perltheclum elevated and 

 nudate. 

 Spore-cells equal in size. 4. A. Oinchonae. 



Spore-cells unequal. 5. A. fallow. 



Perithecia not spreading at the base. 6. A. consangulnea. 



Spores four-celled. 



Perithecia more or less covered by the thallus. 



Thallus thin, the perithecia merely suffused. 3. A. planorbis. 



Thallus thick, the perithecia Imbedded with the tips 



emergent. 7. A. tumlda. 



Perithecia superficial and nudate. 8. A. contendens. 



1. Arthopyrenia gemmata (Ach.) Muell. Arg. Mem. Soo. Phys. Hist. Nat. 



GenSve 16: 428. 1862. 



Lichen gemmatua Ach. Lich. Suee. Prodr. 17. 1798. 



On bark. New Providence : — widely distributed in temperate regions of both 

 hemispheres. 



2. Arthopyrenia bifdrmis (Borr.) Muell. Arg. Flora 66: 306. 1883. 



Verrucaria hiformis Borr. in Engl. Bot. Suppl. pi. 3617. 1829. 



On bark, New Providence, on the Farringdon Eoad : — widely distributed in the 

 temperate regions of both hemispheres. 



3. Arthopyrenia plan6rbis (Ach.) Muell. Arg. Flora 66: 288. 1883. 



Verrucaria planoriis Ach. Syn. Lich. 92. 1814. 



Arthopyrenia indusiata Muell. Arg. Flora 66: 288. 1883. 



Arthopyrenia fallaeior Muell. Arg. Bot. Jahrb. 6: 404. 1885. 



On bark. Great Bahama, and New Providence: — Cuba; Anegada ; Costa Eica. 



4. Arthopyrenia Cinchonae (Ach.) Muell. Arg. Flora 66: 287. 1883. 



Verrucaria Cinchonae Ach. Syn. Lich. 90. 1814. 

 Didymella Cinchonae Wainio, Lich. Bres. 2: 233. 18Q0. 

 Arthopyrenia planior Muell. Arg. Bot. Jahrb. 6: 404. 1885. 



On bark. Great Bahama, New Providence, Little San Salvador, Great Exuma, 

 Watling's Island : — widely distributed in tropical America. 



5. Arthopyrenia fallax (Nyl.) Arnold, Flora 68: 159. 18S5. 



Verrucaria epidermidis var. fallax Nyl. Bot. Notis. (1852) 178. 



On bark. Great Bahama, at Barnett's Point, and New Providence, near Seven 

 Hills ; — widely distributed in the temperate regions of both hemispheres. 



6. Arthopyrenia consangulnea Muell. Arg. Bot. Jahrb. 6: 404. 1885. 



On bark, Eleuthera Point : — ^Florida : Cuba. 



Very closely related to forms of Arthopyrenia epidermidis (Pr.) Mudd. 



7. Arthopyrenia tumida Muell. Arg. Flora 67: 669. 1884. 



On bark. New Providence, at Waterloo Coppice : — Isle of Pines, Cuba ; and Brazil 



8. Arthopyrenia contendens (Nyl.) Muell. Arg. Flora 66: 317. 1883. 



Verrucaria contendens Nyl. Act. Soc. Sci. Fenn. 7: 492. 1863. 



On bark of Jacguinia keyensis. The Bight, Cat Island : — Colombia ; Brazil. 



