24 



Mycologia 



leaves only. It is Puccinia asperior E. & E. The host is prob- 

 ably Leptotaenia diss e eta. 



Puccinia Ligustici E. & E. 



The type of this species is not on Ligusticum scopulorum, but 

 Oxypolis Fendleri. It has been collected at Ruby, Colorado, at 

 9,500 feet by C. F. Baker, on Oxypolis. It also occurs on species 

 of Ligusticum, Carum, and Angelica. The teleutospores are not 

 smooth, as described, but have two or three rows of small tuber- 

 cles. Puccinia luteohasis is the same thing, but with more of the 

 oblong spores. Similar forms occur on Ligusticum, and, with a 

 large collection, it is easily seen that they cannot be separated. 

 It was published as on an unknown umbelliferous plant. Speci- 

 mens sent by Professor Bethel, said to be the same as the type, 

 are on Conioselinum scopulorum (Gray) C. & R. The type 

 specimen could not be found. 



It is very interesting to note, in view of recent discoveries 

 among the heteroecious rusts, that the teleutospores of Puccinia 

 Ligustici cannot be distinguished from those of the large-spored 

 form of Puccinia Bistortae on Polygonum. The latter nas been 

 shown to have in Europe its aecidial stage on Umbelliferae. No 

 cultures have been made in this country, but no doubt the same is 

 true here. 



Puccinia Musenii E. & E. 

 This species has very long, slender, 1-3-septate pedicels, and 

 the teleutospores are closely and evenly verrucose, not reticulate. 

 It has been distributed on Pseudo-cymopterus as Puccinia Jonesii 

 (Pis. Wyo. No. 36, and Crypt. Form. Col. No. 139), and also 

 as Puccinia Pimpinellae (Pis. Wyo. No. 7365). 



University of Minnesota, 

 Minneapolis, Minn. 



