114 Twenty-fifth Rff ort on the Sta te M use vm. 



Leaves of the blackberry, Rubus villosus. Greig. September. 

 I^ot common. 



The pustules of the spores are hyaline and more distinct when 

 the spores are moist or fresh. When the peduncle is absent a 

 pustule appears to occupy its former place of attachment, so that 

 usually a pustule is seen on each of the three prominent points of 

 the spore. The apex sometimes has two pustules. The spots are 

 limited by tiie veinlets of the leaves. 



10. P. Peckiana Howe. Raspberry Brand. 



HypogcHOUs ; spots mostly indefinite or confluent, yellow, some- 

 times none; sori very minute, scattered, brown; spores ovate, 

 sometimes triangular, not constricted, often abruptly pointed at the 

 base, .0013'-.0016' long, .0008'-.0009' broad. 



Leaves of raspberries, Rubus strigosus and R. ocoidentalis- 

 New Baltimore. Howe. Poughkeepsie. Gerard. North Green- 

 bush. August to October. 



This species is closely related to the preceding one, although by 

 its different habit it is readily distingaished from it without micro- 

 scopical examination. The spores often have a hyaline pustule at 

 the apex and when fully mature are seldom found with the pedun- 

 cle attached. 



11. P. jSTolitangeris Cd. Balsam Brand. 



Hypogenous; spots brown or none, sometimes concave above, 

 convex below ; sori scattered or gregarious, unequal, prominent, 

 reddish-brown; spores scarcely constricted, with a hyaline pustule 

 at the apex, .001'-.0013' long, .0006' broad. 



Leaves of touch-me-not, Impatiens fulva. Cherry Yalley. Octo- 

 ber. 



This species seems to be rare with us, having been found, so far 

 as I know, oniy in the locality here given. Our specimens do not 

 agree strictly with the description, the sori being seldom found on 

 brown spots. I have not seen the Uredo form, but it is said to be 

 JJredo Impatientis Pabli. A variety with spores a little larger 

 was tound by Dr. Howe at New Baltimore, growing on leaves of 

 Polygonum duinetorum. 



12. P. CRYPTOTiENi^ Peck. Honewort Brand. 



Hypogenous ; spots small, pallid or yellowish, sometimes tinged 

 with purple, dotted by the sori, occasionally confluent; sori minute, 

 clustered, at first covered by the epidermis, then surrounded by its 

 pale ruptured remains which continue in the form of a small pustule 

 with a contracted subcircular opening at the apex, reddish-brown ; 

 spores subelliptical, scarcely constricted, crowned with a liyaline 

 pustule .0011'-.0016' long, .0006' broad. 



