Ordkr II. PUCCINIACB^. 



Parasitic on living plants ; peridium none ; spores mostly of 

 two kincis, simple and septate, the latter producing on germi- 

 nation, secondary spores. — Berkeley Outlines, p. 328. 



The genera included under this order are : 



Uromyces. — Spores with a permanent pedicel. 



Phragmidium. — Spores multiseptate. 



Triphragmidium. — Spores biseptate. 



PucciNiA. — Spores uniseptate. 



Gymnosporangium. — Spores imbedded in a gelatinous mass. 



Genus V PHRAGMIDIUM. Link. 



Spores cylindrical, multiseptate, scarcely moliliform, borne 

 on long peduncles. 



P. mucronatum. Link. 



Uredospores, spots yellow, small, scattered, spores oval. 

 Teleutospores, scattered over the leaves in tufts ; spores 

 five to seven banded, terminal joint mucronate. 

 On our rose leaves. 



P. clavellosum. 



Teleutospores, with a dull yellow stain on the upper 



surface. 



Spores, four to five parted, peduncle clavate. 

 Coniinon on aralia nudicaulus. 



Genus VI. PUCCINIA. Pers. 



Uredospores subglobose, brand spores uniseptate, supported 

 on a distinct peduncle. — Berkeley Outlines. 



\Tl 



