orton: north American species of allodus i95 



dermis; teliospores broadly ellipsoid 19-29 by 31-49 m; wall light 

 chestnut-brown, uniformly 2-2.5 ^ thick, smooth; pedicel short, 

 colorless. 



On Primulaceae: 



Dodecatheon cruciatum Greene, Dodecatheon latifolium (Hook.) 



Piper {D. Hendersonii A. Gray). 

 Type locality: Antioch, California, on Dodecatheon '' Meadia,'' 



error for D. latifolium. 

 Distribution: Pacific slope. 

 ExsicCATi: Barth. N. Am. Ured. 155. 



Note. An undescribed correlated Dicaeoma occurs on the narrow- 

 leaved species of Dodecatheon. 



25. Allodus Swertiae (Wint.) comb. nov. 

 Aecidium Swertiae Opiz, Seznam Rostlin 1 1 1. 1852. [Hyponym.] 

 Puccinia Swertiae Wint. Rab.. Krypt. Fl. 1 : 205. 1881. 

 Dicaeoma Swertiae Kuntze, Rev, Gen. 3^: 470. 1898. 



Aecia amphigenous, gregarious; aeciospores 16-22 by 21-29 m; 

 wall 1-1.5 M thick, light golden, finely verrucose, the pores rather 



distinct, scattered. ^u 1 



Telia amphigenous, scattered, chestnut-brown, rather early 

 naked; teliospores broadly ellipsoid, 20-27 by 33-43 m; wa 1 light 

 chestnut-brown, uniformly about 2 m thick, smooth; pedicel color- 



less short 



Urediniospores occasionally found in the telia of European 



specimens. 



On Gentianaceae: 



Swertia perennis L., S. palustris A. Nels., and 5. scopuhna 



Greene. 

 Type locality: Bohemia on Swertia sp. 

 Distribution: Rocky Mountain Region; also in Europe. 

 ExsicCATi: Clements, Crypt. Form. Colo. 144- 



26. Allodus opulenta (Speg.) comb. nov. 

 Puccinia opulenta Speg. Anal. Soc. Ci. Argent. 9: 170. 1880. 

 Aecidium Ipomoeae Speg. Anal. Soc. Ci. Argent. 9: i73- 1880. 

 Dicaeoma opulentum Kuntze, Rev. Gen. 3=^: 469. 1898. 



Aecia of primary form hypophyllous, sparsely gregarious, aecia 

 of secondary form amphigenous, gregarious, frequently along the 

 veins; aeciospores 18-24 by 21-31 n\ wall 3-3-5 M thick verrucose. 



Telia amphigenous, usually surrounding the secondary aecia, 



