38 SACCARDO, PECK, TRELEASE 



^cidium claytonianum (Schweinitz) Clinton. 



St. Paul Island, Bering Sea (Trelease, 664, on Claytonia arctica). 



^cidium circinans Eriksson f . aconiti-delphinifolii. 



St. Paul Island, Bering Sea (Trelease, 661, on Aconitum). 

 ■fficidium astragali-alpini Eriksson.^ 



Muir Glacier (Trelease, 632, on Astragalus) . 



Thecopsora vacciniorum (Link) Karsten.* 

 Sitka (Trelease, 614, on Vaccinium). 



Chrysomyxa pirolae (De Candolle) Rostrup.* 



Glacier Bay (Trelease, 771); Disenchantment Bay (Coville & 

 Kearney, 1025). Both on Pyrola. Yes Bay (Howell, on Moneses 

 grandiJJora^ 1632). The uredo stage only. 



Phragmidium subcorticium (Schrank) Winter.* 



Sitka (Evans, 204) ; Kadiak (Cole; Trelease, 638, 639, 640). On 

 Rosa cinnamomea. The JEcidial stage only. 



Phragmidium nibi (Persoon) Winter?* 



Disenchantment Bay, (Trelease, 670) ; Unalaska (Hb. Bernhardi). 

 On Rubus stellatus. The uredo only. 



Phragmidium rubi-idaei (De Candolle) Karsten? * 



Kadiak (Trelease, 671, 672, 673, on Rubus chamcemorus) . The 

 uredo stage only, forming small sori on the under surface of the leaves. 



Puccinia buUata (Persoon) Schroeter.* 



Popof Island (Saunders, 617, on Ccelopleurum gmelini) ; St. 

 Paul Island, Bering Sea (Trelease, 618, on Conioselinum gmelini). 



Puccinia circaeae Persoon.* 



Juneau (Setchell, 1250, on Circcea alpina or C. facijica). 



Puccinia laurentiana Trelease, sp. nov.* 



Sori hypophyllous, chestnut-brov^rn, round, about i mm. in diame- 

 ter; spores brow^n, somewhat constricted, about 20x50//, the apex 

 thickened and with pallescent apiculus, the rather thick walls neither 

 striate nor verrucose ; pedicel hyaline, breaking short. 



St. Lawrence Island, Bering Sea (Macoun, on Saxifraga neglecta 

 stolonifera, 60). 



Agreeing more closely with the description of P. saxifragce-ciliatce, 

 than with other described species on genera of Saxifragaceas. 



* Determined by Professor J. C. Arthur. 



