Melanconiea?, Didymosporw, Marsonia. 367 



conidiis in cirros plerumque fllilbrme.s, contortos, aurautiacos erum- 

 pentibus, fllirormi-rusoideis. valdo curvatis, teuuissimis, hyaliuis, 

 17-25i;l y.. 



Hab. ad corticem putridum G 1 o d i t s c h i jo T r i a c a n t h i, Mis- 

 souri Amer. bor, 



Sect. 3. IMiicosporn' Sacc. 



MtLANCONIUM Link. — Sacc. Syll. III, p. 749. 



" 1. Melanconium triangulare E. et E. in Journ. uf Myc. 188t), p. 38. 4010 



— Acervnlis epidermide tectis, orbicularibus. parvis, .stfomate cor- 

 ticali, centro in pnstulam conicam elevato ; couidiis obtuso trian- 

 gularibus, minutis, 5-0. y.. diam., brunneis, in massam atram coa- 

 lilis; basidiis gracilibus, 15-1, 



Hab. in ranuilis emortuis Carpini americauce, West Che- 



ster, Pensylvania Araer. bor. 

 *o9. Melanconium salicinum Ell. et Ev. iu Journ. of Myc 1886, p. 4(ni 



103. — Acervulis sparsis, tuberculiformibus, vel sjepe sursum 



truncatis, circiter 1 mm. diam. crassis, epidermide rupta cinctis; 



conidiis ovato-ellipsoideis, brunneis, 10-12^:6-7. 



Hab. in ramulis emortuis Sali c i s uigra; in America boreali 



(Langlois). — Differt a .1/. bicolore matrice atque stromate albo 



nuUo. 

 "48. MelanconJum gracile Ell. et Ev. in Journ. of Myc. 1885, p. 44. J612 



— Pustulis prominontibus, seriatim dispositis, in rimis longitndina- 

 libus corticis, stromate minuto, albescente ; conidiis oblongo-cylin- 

 draceis, pallide brunneis, 15-18^:4-5. 



Hab. in ramulis emortuis C aryas al ba? Plainfleld Amer. bor. 

 (Gev. F. Mescutt). 



Sect. 4. Di(lvinosjioi'ji' Scacc. 



MARSONIA Fisch. — Sacc. Syll. III, p. 767. 



5. Marsonia Juglandis (Lib.) Sacc. Syll. III, p. 768. Far Rhois Sacc. 4028 



in Kov. Myc. 1885. — Conidiis 18-21 :; 3-4, curvato-subrostratis ; 



acervulis conidiorum membranula anhista sed reticulata, brunneohi 



(non cellulosa) velatis. 



Hab. \\\ foliis Rhois tiphyna;, Feuilleaubois Galiite. 

 ■10. Marsonla Quercus Peck in 38 Rep. St. Mus. p. 99. — Macu- 4,313 



lis angularibus vel suborbicularibus, albescentibus vel rufo-griseis, 



