REPORT OF THE BOTANIST. LY7 
Leaves of various species of Helianthus. Comimon. September 
and October. 
In his Synopsis of N. A. Fungi, Schweinitz changed the name 
of this species to P. Helianthorum. 
20. P. investita Schw. Cudweed Brand. 
Hypogenous ; spots yellow or none; sori small, subrotund, 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 
Hoadium Gnraphaliatum. 
21. P. mmnututa Pk. 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, Solidago altissima. Catskill 
mountains. July. Rare. 
This species is very closely related to the European P. Virgau- 
ree 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. Virgauwree. 
22. P. Xanrum Schw. Cocklebur 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—.0007 broad; peduncle colored, one-half to wholly as long 
as the spore. 
Leaves of cocklebur, Xanthiwm strumarium. Common. Sep- 
tember and October. : 
