1 



782 Discomyceteee, Patellarleae, Didymosporse, Raveuelula. 



ascis cylindraceo-clavatis, octosporis ; sporidiis ellipticis uniseptatis, 

 10-15 := 5-8, brunneis ; paraphysibus numerosis filiforraibus, leviter 

 sursum incrassatis brunneisque, coalescel^tibus. 



Jlab. in ligno putrescenti in Rritannia (Bloxam). 



10. Karschia populina (Cr.) Sacc. Patellaria populina Cr. Finist. 

 p. 46. — Ascomatibus 1 mm. diam., atris, sessilibus, disciforrai- 

 bus ; ascis clavatis, octosporis, filiformi-paraphjsatis; sporidiis ob- 

 longis, brunneis, grosse biguttatis, uniseptatis. 



Tlab. in ramulis emortuis Populi, Finistere Galline. 



11. Karschia imperfecta (Ellis) ^dicc. Patellaria Ellis in Bull. Torr. 

 1881, p. 74. — Minuta, 450 j.. diam., orbicularis, sessilis, atra, 

 margine pallidiori, obsoleto; ascis oblongo-cylindraceis; sporidiis 

 distichis, cylindraceo-fusiformibus, uniseptatis, primo subhyalinis, 

 dein rufescenti-brunneis, 10-12 ::; 3,5-4. 



Hab. in culmis vetustis Zeae (Corn) in America boreali. 



12. Karschia talcophiia (Ach.) Korb. Parerg. pag. 460, Lecidea Ach. 

 Lich. Univ. p. 113, Abrolhallus Mass. Misc. p. 42, Buellia Korb. 

 Syst. p. 230, Poetschia Korb. in Stein Schles. Flecht. p. 223. — 

 Primitus innata, globulosa, clausa, mos prominula, sessilis, patel- 

 lata, opace atra, margine varie explicato ; ascis clavatis, noduloso- 

 paraphysatis, typice octosporis; sporidiis elliptico-solea^formibas, 

 fuscis, minutis 9-11 s 4-5. 



Ilab. in thallo Urceolarise scruposag in Germania, Italia. 



RAVENELULA Speg. Fung. Arg. Pug. IV, n. 229 (188i) [Etym. a cl. 

 H. W. Ravenel, mycologo araericano]. — Ascoraata applanata, 

 sessilia, glaberriraa, atra, minuta, phyllogena (semper?). Asci apa- 

 raphysati, 16-spori. Sporidia elliptica, didyma, fuliginea. 



1. Ravenelula gainesvillensis Speg. 1. c. n. 229. — Applanata, rainu- 

 ta 180-200 u.. diam., sessilis, atra, maculis albescentibus, iudeter- 

 minatis, raajusculis insideus, sparsa v. subgregaria, glaberrima, 

 margine obtusato-prorainulo, contextu excipuli minutissrae et iudi- 

 stincte celluloso, fuligineo-atro, epithecio e cellulis crustaceo-con- 

 glutiuatis (sub pressione liberis), irregulariter globosis 5 u. diara., 

 olivaceo-fuligineis, subopacis (an conidiis?) composito; ascis clava- 

 tis, sursura obtusissime rotundatis, et crassissime tunicatis, deor- 

 sum brevissime attenuato-pedicellati", 50-60=^15-18, 16-sporis, 

 aparaphysatis ; sporidiis inordinate conglobatis, ellipticis, ssepe inae- 

 quilateralibus ac subcyrabneformibus, utrinque obtusiusculis, 10-12 



