FUNGI 25 



depressis, 180-200 p. lat., hyphis consimilibus laxe vestitis; ascis 

 (immaturis) clavatis, 90-120 x 15-18 ^ aparaphysatis, subsessilibus ; 

 sporidiis. . . . 



Glacier Bay (Trelease, 712, on still living bark of Alnus}. 



Mycelium sistit Hormiscii v. Antennaricz formam ; forte Hormiscio 

 alto Ehrenb. accedit. 



Eurotium herbariorum (Wigg.) Link. 

 Yes Bay (Howell, on Geum, 1618). 



Family CHYTRIDIACEJE. 

 Physoderma menyanthis De Bary. 



Kukak Bay (Saunders, 769, on Menyanthes trifoliata) . 



Family SAPROLEGNIACEJE. 

 Lagenidium entophytum (Pringsheim) Zopf. 



Popof Island (Saunders, 40 ic, in zygospores of Spirogyra port I- 

 calis) . 



Pythium gracile Schenk. 



Popof Island (Saunders, 401*5, in vegetative cells of Spirogyra 

 porticalis). 



Family PERONOSPORACEJE. 



Peronospora parasitica (Persoon) De Bary. 



Yakutat (Saunders, 677, on Arabis hirsuta'). 

 Peronospora ficariae Tulasne. 



Glacier Bay (Coville & Kearney, 743, on leaves of Ranunculus). 



Family USTILAGINACE^E. 

 Tuburcinia trientalis Berkeley & Broome. 



Kadiak (Trelease, 720) ; Unalaska (Trelease, 719). On living 

 leaves of Trientalis. 



The conidial stage, known as Ovularia trientalis Berk. 



Ustilago vinosa (Berkeley) Tulasne.* 



Point Barrow (Murdoch in 1883, in Oxyria digyna). 

 Ustilago bistortarum (De Candolle) Kornicke. 



Port Wells (Trelease, 764, in leaves of Polygonum viviparum). 

 Ustilago bistortarum inflorescentiae Trelease, var. nov.* 



Spores very abundant, brownish-purple, subglobose or slightly elon- 

 gated, 9 14 /-i, usually 11-13 <, almost perfectly smooth. 



