10d6 Hyphomycetae. MucedinacoBC, Scolecosporae, Cercosporella. 



Hab. in tbliis Helianthel 1 ae qui d quenerv is, Colorado 

 Airer. bor. (Crandall). 



2. Cercosporella nivea Ell. et Bartli. Erythea 1896, p. 82. — Cpe- 4241 

 spit.ulis miuutis, niveis, sparsis, ampbigeKis, maculis nullis; hypliis 

 fortilibus osespitcsis, oontinuis, h^^alinis, oblongo-cylindraceis, in- 

 torduni apioe incraj^satis, 15-25 v 4; conidiis gracilibus, longis, mul- 

 tiguttulatis, hyalinis, 1(X.>-160 v 3-4. 



Hab in foliis vivis S o 1 i d a g i n i s r a d u 1 .'i3 in Kansas Amer. 

 bor. (Bartholomevv). — Aspectu extcrno Ceixosporellam canam 

 Sacc. optime simiilat. 



3. Cercosporella carduicola P. Brun. Aot. Soc. Linu. Bordeaux 424? 

 1898, p. 18 extr. — Maoulis orbicularibus brunneis, obscure mar- 

 giaatis; ciespitulis albis minutissimis ; conidiis bacillaribus hya- 

 linis, guttulatis, rectis v. leniter flexuosis, 20-26 « 2. 



Hab. iu foliis Cardui tenuiflori, Rochefort Gallia^. 



4. Cercosporella Baccharidis EIl. et Ev. Proc. Acad. Philad. 1895, 4243 

 p. 438. — Macuhs suborbicularibus, 3-4 mm. diam., sordide brun- 

 neis, primo viresceutibus, plerumque rugosis; hyphis hypophyllis, 

 caespitosis, hyahnis simpiicibus. plerumque reetis continuisque, 

 sursum intcgris v. subtiliter denticulatis, 25-40 v 4; conidiis cylin- 

 draceis, utrinque obtusis, 1-3-septatis, hyahnis, 40-60 v 4-4'/2. 



Hab. in foliis Baccharidis Douglasii. Callfornia (Blas- 

 dale). 



5. Cercosporella Pycnanthemi Atk. Bull, Cornell Univ. III, n. 1, 4244 

 1897, p. 47. — Maculis hypophyllis magnis angulosis, foliorum 

 nervis limitatis; hyphis hypophylli^, e stromate minuto dilute lu- 



teo copiose ascendentibus; conidiis nuraerosis. 



Hah. in foliis PycnanthAmi, Auburn, Alabama Amer. bor. 



6. Ceroosporeila nivosa Eli. et Ev. Proc Acad. Pliilad. 1895, p. 438 424i> 

 — Maculis parvis, rotundis, 1-2 mm. diam., albis, margine angu- 



«to elevato, purparascente einctis; hyphis simplieibus, apice sub- 

 attenuatis, nucleatis, continuis, 1245 v 1 '/^-2, sursum hyalinis 

 deorsum branneoMs et plus minusve tumidulis, numerosis, csespi- 

 tulos hemisph;iericos, cellulosos, brunneolos, sphteriiieformes for- 

 mantibu.s; conidiis cylindraceis, hyalinis, 12-25 viy^-2, nucleatls, 

 demum '1-2-septatis. 



Hab. in foHis Pentastemonis Digitalis et ovati, Ohio 

 et Idaho, Amer. bor. 



7. Cercosporeila prollficans Bll. et Holw. BuU. Lab. Nat. Hist. State 4246 

 Univ. of Jowa III, n. 3. 1895, ].. 42. — Arnphigena serj plerum- 



