Discomycotoou, Pliacitlioao, Scolecosporao, Uhytisma. 753 



hoc iiitor Dothideaceas cnumerat, sed natura tota Discoinycetum. 

 Pluriina! specios, inaximo Schwoinitzianno, omnino imperrecto co- 

 gnita?, ^unt forto tantum aliorum fungorum incunabula. 



I. Eu-Rhytisma. Sporidia flliformia. 



. Rhytisma acerinum (Pers.) Fr. Syst. myc. II, i). '^C)"^), Tul. Carp. ^^^^^ 

 III, p. 110. t. XV. f. 9-12 Xyloma Pers. Syn. p. 104, Nees Syst. 

 f. 21, DC. Mem. p. 318, t. III, f. 9, A". lacrymans et gyrans Wallr. 

 Crypt. n. 2293 et 2294. — Innatum, maculiforrae, ut plurimura 

 suborbiculare, atruni. in pagina foliorura superiori protuberans, 

 hymeiiiis compluribus lirelliformibus, elongatis, Hoxuosis, rarius 

 ovoideis vol disciformibus, plagis plus minus laxis sterilibus invicera 

 disjunctis, hypothecio crassiusculo, albo, tandera secus hyraonia in 

 labia flexuosa dehiscentia, epithecio pallescento vel cinereo, circi- 

 ter 1,5 cm. lat.; ascis fusoideo-clavatis, 120-130^9-10, 8-sporis ; 

 sporidiis conglobatis, tiliformibus, utrinque attenuatis, flexuosis, in- 

 terdum partim circinatis, guttulatis, 65-80 = 1,5-3; paraphysibus 

 filiformibus apice flexuoso-curvatis, 1 u. cr. 



Ilab. in foliis .\ceris campestris, A. platanoidis, A. 

 Pseudoplatani, A. rubri in Suecia, Fennia, Italia, Gerraania, 

 Gallia, Relgio, Britannia, Araer. bor. — Stat. spermog. : Melasmia 

 acerina Lov. 



. Rhytisma punctatum (^Pers.) Fr. S. M. II, p. 5(59. Xyloma Pers. 3084 

 Obs. 2 p. 101, DC. Mem. t. 3, f. 0. — Innatum, confertura, angu- 

 lato-subrotumluin, rugosum, atro-nitons, frustulatim rumpens, intus 

 fusco-atrum; ascis clavatis 70-80 s 9-10 octosporis ; sporidiis filifor- 

 mi-clavulatis, rectis curvulisve, 30-36 =; 1,5-2, hyalinis, obsolete nu- 

 cleatis; paraphysibus flliforraibus. 



Ilab. ad folia .\coris carapestris, A. Pseudoplatani 

 A. spicati in Suocia, Gallia, Germania, Italia, Britannia, Belgio, 

 \iner. bor. — Quoad stat. spermog. cfr. Fuck. Symb. p. 201. Asco- 

 raata minora, viginti circiter in maculara subrotundara disposita, 

 tamen inter se libera nec nisi rarius confluentia, subumbonata, 



I epiphylla. 



. Rhytisma saiicinum (Pers.) Fr. S. M. II, p. 568, Xyl. salic. Pers. .3085 

 di;ip. p. 5, t. 2, f. 4, Nees syst. f. 20, Xyl. leucocreas Dec. Mem. 

 I. c. p. 319, t. 3, f. 5. Xyl. amphigenum Wallr. Crypt. n. 2299. 



j — Innatnm, crassum, tuberculosum, subnitens, squamoso-rumpens, 

 disco lutescenti-stramineo, intus albura; ascis clavatis, 8-sporis, 



48 



