Pyrenomycetse, Mfcrothyriaceee, Hyalodidymse, Microtbyrium. 

 Hab. i 11 foliis Coffeso in Mexico (IIkrrera). — Obscrvante 

 cl. Maublanc, species et varietas praedictae 6b vittas albas transver- 

 sas sporidiorum a typo Vizellce fortc separandse. 



Sect. S. Byalodidymae. 



MICROTHYRIUM Desm. — Syll. II p. 662, IX p. 1055, XI p. 370, 

 XIV p. 687, XVI p. 636; 



1. Microthyrium microscopicum Desm. Syll. II, p. 662. — var. 2990 

 Dryadis Rehm, Ascom. exs. n. 1571. Ann. Mycol. 1904, p. 520. 



— Peritheciis in maculis fuscidulis insidentibus, epiphyllis, 70-90 

 [>.. diam., poro pertusis, hyphis rectangulariter ramosis. septatis, 

 3-4 jj.. cr., interdum hyphopodia oblonga vel triloba. continua 

 6 » 4-5 gerentibus cinctis ; ascis oblongo-piriformibus 25 « 7-8. octo- 

 sporis fHiformi-paraphysatis ; sporidiis oblongis, utrinquc obtusis, 

 medio subconstricto-1-septatis, 8 * 2-2,5, distichis, strato tenui 

 mucoso obvolutis. 



Hab. in foliis adhuc pendulis Dryadis octopetal;e in Alpi- 

 bus bavaricis. 



2. Microthyrium Uvariae P. Henn. in Engl. Bot. Jahrb. 1903, p. 47. 2991 



Peritheciis epiphyllis, sparsis, discoideis, atris, membranaceis, 

 rugulosis, 0,3-0,6 cm. diam., lobato-rimosis, contcxtu radiato- 

 cellulosis, fusco-brunneis; ascis ovoideis vel ellipsoideis, vertico 

 rotundatis, truncatis, octosporis, 35-50^25-30; sporidiis ellipsoi- 

 deis vel oblonge ovoideis, rectis vel curvulis, utrinque rotundatis, 

 1-septatis, intus granulosis, 18-24*8-10. 



llab. in foliis tJvari;e Kirchii, Dar-es-Salam-Zanzibar Afri- 

 cae orient. 



3. Microthyrium Styracis Starb. in Arkiv. for Botan. 1904. Band 2, 2992 

 p. 12. — Peritheciis sparsis v. sparse gregariis, interdum nonnullis 

 confluentibus, maculas non efformantibus, scutellatis, orbicularibus, 

 centro pertusis, marginc inaequali v. irregulariter lobulato, nigris, 

 trans lucem fuligineis, contextu reticulato-prismatico, 100-200 



;j.. diam., ascis late clavatis, sursuin fero truncatis, 31-38 »5,5- 

 7,6 3 sporidiis ootonis distichis, clavulatis, primo guttatis, dein 

 supra medium 1-septatis, loculo sup. rhombiformi, aoutiusculo, inf. 

 lindrico-clavulato, obtusiusculo, hyalinis 11-12*4.5-5; paraphy- 

 sibua nullis. 



JInJ'. ad folia Styraeis, Piratiny, llio Grande do Sul Brasiliae. 



