116 Twenty-fifth Rep or t on the Sta te M use um. 



peculiarity extends also to the Uredo form, Triohobasis Labiata- 

 rum Lev. The two forms generally grow together upon the same 

 plant and sometimes in the same sorus. The dry spores are flat- 

 tened at each end and shorter than when moist. 



16. P. Anemones Pers. Anemone Brand. 



Hypogenous ; spots none ; sori nearly equal, subrotund, promi- 

 nent, scattered, rarely closely placed and confluent, brown ; spores 

 strongly constricted, .0013'-.0016' long, .OOOT-.OOOS' broad, the 

 two parts nearly globose and equal ; peduncle hyaline, short. 



Leaves of the wind flower and meadow rue, Anemone nem^orosa 

 and Thalictrum, cornuti. Common May to Jul3^ 



17. P. Peunoktbtvi Lk. Plum-tree Brand. 



Hypogenous ; spots yellowish, often tinged with purple, some- 

 times none ; sori subrotund, scattered, dark brown ; spores slightly 

 constricted, .0016-.002' long, .0008-.001' broad; peduncle hya- 

 line, seldom more than half the length of the spore. 



Leaves of wild cherry, Prunus serotina. Buffalo. Clinton. 

 September. 



This species seems to be rare. The specimens were found on 

 the leaves of very young trees. The upper spore cell is generally 

 broader than the lower. 



§ 5. Spores oblong or oblong-davate^ peduncle vo^rious. 



18. P. GrALioErM Lh. Bedstraw Brand. 



Hypogenous; spots none or indistinct; sori unequal, scattered, 

 surrounded by the ruptured epidermis, brown or blackish-brown ; 

 spores oblong, compact, slightly constricted, .0013'-.0016' long, 

 .0006' broad ; peduncle generally equal to or exceeding half the 

 length of the spore. 



Leaves of Galium triflorum. Buffalo. Clinton. Portville. 

 September. Rare. 



I have found this species but once and then on a single plant 

 only. The Uredo form is Triohobasis Galii Lev. 



19. P. Helianthi Schw. Sunflower Brand. 



Hypogenous; spots none; sori subrotund, prominent, scattered, 

 sometimes closely placed, blackish-brown or black ; spores oblong- 

 elliptical, obtuse, slightly constricted, .0016'-.002' long, .0008- 

 .OOr broad ; peduncle hyaline, equal to or exceeding the length of 

 the spore. 



