336 
J. C. ARTHUR 
This heteroecious rust is especially abundant in the western moun- 
tains of North America. It produces its aecia on the twigs and trunks 
of various species of pine. Its occurrence on Lamourouxia has not 
been reported before. 
21. CiONOTHRix PRAELONGA (Wint.) Arth. (on Carduaceae). 
Eupatorium morifolium Mill., Guatemala City, Feb. 15, 1916, 4Q1; 
same, Jan. 9, 1917, 688; same, Feb. 8, 1917, 840. 
Eupatorium odoratum L., Mazatenango, Dept. Suchitepequez, 
Feb. 22, 1916, 525. 
Eupatorium sp., Agua Caliente, Dept. Guatemala, Feb. 10, 1917, 
852. 
A short-cycle species. The genus contains forms with telia very 
similar to those of the long-cycle Cronartium. It was collected by 
Kellerman on E. populifolium H. B. K., at Los Amates, Dept. Izabal, 
March 15, 1905, SJOi, 5302, and reported by Kern in Mycologia, /. c. 
22. Alveolaria Cordiae Lagerh. (on Ehretiaceae). 
Cordia riparia H. B. K., Colomba, Dept. Quezaltenango, Feb. 2, 
1917, 821. 
An interesting short-cycle species which probably forms no pycnia. 
It occurs also in the West Indies and South America. 
Purdue University, 
Lafayette, Indiana 
