Report of the Botanist. 1 I 7 



Leaves of various species of Ileliaiithus. Common. September 

 and October. 



In his Synopsis of N. A. Fungi, Schweinitz changed the name 

 of this species to P. Ilelianthorum. 



20. P. iNVESTiTA Sohw. Cudweed Brand. 



Hypogenous ; spots yellow or none; sori small, subrotand, scat- 

 tered or clustered, blackish-brown or black ; spores oblong, slightly 

 constricted, obtuse or somewhat pointed, .0016'-.002' long, .0008' 

 broad; peduncle hyaline, one-half to wholly as long as the spore. 



Leaves and stems of various species of Gnaphalium. Fort 

 Edward. Howe. West Albany. Autumn. Not common. 



The sori are partly concealed by the tomentum of the plants 

 they inhabit. Those on the stems remain through the winter and 

 may be found in spring. This species is sometimes associated with 

 ^cidium Gnajphaliatum. 



21. P. MiNUTULA Ph. Minute Brand. 



Hypogenous; spots suborbicular, sometimes confluent, yellow, 

 often with a purple or brown center; sori clustered, crowded, 

 minute, blackish-brown or black ; spores oblong, slightly con- 

 stricted, mostly obtusely pointed, .0016'-.0022' long, .0006'-.0007 

 broad ; peduncle colored, rarely as long as the spore. 



Leaves of the tall goldenrod, SoUdago altissima. Catskill 

 mountains. Jnlj-. Rare. 



This species is very closely related to the European P. Virgau- 

 recB and perhaps ought to be considered an American variety instead 

 of a distinct species. It differs, however, in having the spots more 

 highly colored and usually stained with brown or purple, in the 

 dull, not shining, blackish color of the more crowded sori and in 

 the usually nucleated, longer and more pointed spores. The sori 

 sometimes arrange themselves along the veinlets of the leaves but 

 do not show clearly the " stellate " character of P. Virgaureoe. 



22. P. Xanthii Schw. CooMebur Brand. 



Hypogenous ; spots unequal, suborbicular, plane or concave 

 above and convex below, sometimes confluent, yellowish, often 

 with a purple or brown center ; sori clustered, small, crowded, 

 sometimes circinating, blackish-brown ; spores oblong, slightly 

 constricted, generally obtusely pointed, .0016'-.0022' long, 

 .0006'-.000T broad ; peduncle colored, one-half to wholly as long 

 as the spore. 



Leaves of cocklebur, Xanthium strumarium. Common. Sep- 

 tember and October. 



