rstila^inacepe, Ustilago. 473 



5. Ustilago Triplasidis Ell. et Ev. in Clinton. North Amer. Ustil. 1591 

 Proceed. Boston Soc. 1904, p. 355. — Soris ovaria occupantibus 

 ellipsoideis 3-4 mm. long ., membrana obductis, inter glumas ni- 

 dulantibus; sporis lsete rufo-brunneis, vulgo uno latere dilutiori- 

 bus, ovoideo-spha^roideis 5-9 \i. long. plerumque copiose minutis- 

 sime echinulatis. 



Hab. in ovariis Triplasidis americange, Mississipi Ame- 

 ricse bor. 



6. Ustilago Piperii Clint. North Amer. Ustil in Proceed. Boston Soc. 1592 

 1904, p. 382. — Soris hypophyllis, pustulas formantibus, plus 

 minus confluentibus, sgepe marginalibus, tectis, dein erumpentibus 



et massam atro-purpuream ostendentibus; sporis rufo-purpureis 

 ovoideis vel sphyeroideis, rarius irregularibus, minute et plerum- 

 que oblique striatis, 7-10 |i. diam. vel usque 12 \x. long. 



Hab. in foliis Polygoni Davitise, in California et Poly- 

 goni phy tolaccsef olii, Idaho Amer. bor. (C. V. Piper). — 

 Ustil. KcenigicB et Ust. Bistortarum afnnis. 



7. Ustilago Rumicis (Beck.) Clint. North Amer. Ustil. in Proceed. 1^93 

 Boston Soc. 1904, p. 380, Ustilago utriculosa Tul. var. Rumicis 

 Berk. G-revill. 1874, III, p. 39. — Soris floricolis, axes florum ob- 

 ducentibus et massas sordide purpureas formantibus; sporis ovoi- 

 deo-sphaeroideis plerumque 11-16 \l. long., atro-purpureis ; epi- 

 sporio reticulato, areolis 1 \x. alt. et 1-3 \x. diam. 



Hab. in floribus E-umicis Acetosellae in Carolina infer. et 

 Rum. hastatuli, in Alabama, Amer. bor. — U. Kuhneance 

 afflnis. 



8. Ustilago Bistortarum (D C) Korn. - Syll. VII, p. 469. — var. 1594 

 inflorescentiae Trelease, Harrim. AlaskaExped. Crypt. p. 35. — Spo- 



ris copiosissimis, brunneo-purpureis, subglobosis v. subelongatis, 

 9-14, plerumque 11-13 |i. diam., saepius perfecte levibus. 



Hab. in inflorescentia Polygoni vivipari, Kadiak, Yakutat, 

 Unalaska (Trelease). — Sporis levibus et situ in inflorescentia 

 a typo dignoscitur. 



9. Ustilago utriculosa (Nees) Tul. - Syll. VII, p. 476. — var. micro- 1595 

 spora Speg. Myc. argent. ser. II, 1902, p. 58. 



Hab. ad flores Polygoni acris, in uliginosis prope Cordoba 

 Argentime. — Varietas a typo sporis conspicue minoribus (6-8 

 ;x. diam.) angustius areolatis, mombrana 1 ;jl. alt., recedens. 



10. Ustilago tuberculiformis Syd. Ann. Mycol. 1903, p. 22. — Soris 1596 

 hypophyllis, maculis fuscis purpureo marginatis LnsidentibuSj tu- 



