Uredinacese, Didymosporse, Puccinia. 385 



dosoris amphigenis, pulvinatis, diutius tectis, ferrugineis; uredo- 

 sporis ovoideis, interdum subglobosis vel ellipsoideis flavido-brun- 

 neis, aculeato-verrucosis, 15-24 « 13-18 ; teleutosporis hypophyllis 

 gregarie sparsis, rotundato-pulvinatis firmis, cinnamomeis, ca. 0,3- 

 0,4 [i. diam. ; teleutosporis ovoideis interdum ellipsoideis, apice vix 

 incrassatis, rotundatis, medio 1-septatis constrictis, ilavo-brunneis, 

 ievibus, 15-25^10-16; stipite plus minus elongato, hyalino sub- 

 navidulo, 10-30*2-3. 



Hab. in foliis Panici sp., Rio Negro, Moura, Amer. merid. — 

 Soris firmis, pulvinatis, teleutosporarum notis sat distincta species. 



358. Puccinia simillima Arth. in Bot. Gaz. 1902, XXXIV, p. 17,11, 1286 

 III. — Soris amphigenis minusculis, oblongis, epidermide fissa; 

 uredosoris late flavis pulverulentis, paraphysibus clavatis inter- 

 mixtis ; uredosporis obovato-oblongis clavatisque, 26-44 « 18-22, 

 modice tunicatis, aureo-flavis, minute tuberculatis et interdum 

 leviter echinulatis, poris germinat. sparsis, obsoletis ; teleutosoris 

 minutis, copiosissimis, subnigris; teleutosporis, subinde ex uredo- 

 soris provenientibus, lineari-oblongis v. oblongo-lanceolatis, septo 

 leniter constrictis, 42-56 * 15-20, basi tenuatis, apice acutiusculis 



v. plus minus obtusis, ad 15 \x. incrassatis ; pedicello firmo, crasso, 

 sporam plus minus aequante. 



Hab. in foliis et vaginis Phragmitis communis in Ame- 

 ricce borealis pluribus locis. — Pycnidia et aecidia incerta. 



359. Puccinia peridermiospora Arthur, Science I, p. 565 (1899), Puc- L287 

 cinia fraxinata (Link) Arth. in Bot. Gaz. 1902, p. 6. — I Cceoma 

 fraxinatum Link in Willd. sp. pl. 62, p. 62, JEcidium Fraxini 

 Schw. — Syll. VII, p. 806. — II Uredo peridermiospora Ell. et 



Tr. — Syll. IX, p. 333. — Puccinia sparganioides E. et Tr. III. 

 —  Teleutosoris pulvinatis, atro-brunneis, hypophyllis; teleutospo- 

 ris ellipsoideo-oblongis, 35-62*16-22, septo leniter constrictis, 

 apice obtusis incrassatisque ; pedicello firmo, angusto, sporam 

 aequante v. duplo longiore. 



Hab. II-III in foliis Spartime cynosuroidis in Amer. 

 boreali pluribus locis. — In foliis Fraxini lanceolatir et F. penn- 

 sylvanicce, socio iEcidiolo pycnidiis epiphyllis, navidis, exiguis; 

 sporulis obovato-oblongis 5*3. 



360. Puccinia Seymouriana Arth. in Bot. Ga/.. 1902, XXKIV, p. 11. 1288 

 — Soris epiphyllis, internerviis, prominulis, oblongis, epidermide 

 rupta obsolete cinctis; uredosporis globosis v. late ellipsoideis, 30- 



45 * 26-39, tuberculatis, contentu aurantiaco glolmloso, dein navo 



25 



