18 



Journal of Mycology 



[Vol. 13 



naucinus, 13:10 

 neophana, 12 :248 

 nictophila, 13 :3 

 noscitata, 12 :157 

 oblita, 12:203 

 parvanulata, 12 :157 

 pelidna, 13 :13 

 phaeosticta, 12 :248 

 polypyramis, 13:11 

 porrigens, 13:6 

 procera, 13 :7 

 prominens, 13 :6 

 pulveracea, 12:158 



Index — Concluded. 



purpureoconia, 12 :158 

 pusillomyces, 12:158 

 radicata, 13:12 

 repanda, 12 :197 

 rhacodes, 13 :8 

 rhacodioides, 13 :7 

 rhodopepla, 13 :6 

 rubro-tincta, 12 :245 

 rufescens, 12 :246 

 rufipes, 12:156 

 rugulosa, 13 :2 

 rugoso-reticulata, 

 12:195 



seminuda, 12 :157 

 solidipes, 13:10 

 sordescens, 12 :247 

 spanista, 12:198 

 spectabilis, 13:4 

 subclypeolaria, 12 :246 

 subliliacea, 12:198 

 subremotus, 13 :2 

 sulphurina, 13 :5 

 umbrosa, 12:199 

 virescens, 12 :245 



THE RUSTS OF GUATEMALA.* 



FRANK D. KERN. 



Two botanical excursions have been made to Guatemala, 

 Central America, by Professor W. A. Kellerman ; one during the 

 months of January, February and March, 1905, and another dur- 

 ing- the corresponding season of 1906. The principal object of 

 the trips was to secure collections of parasitic fungi, but a large 

 amount of material which will serve to illustrate the general 

 botanical character of the country was brought back. The trips 

 covered the territory from the Atlantic to the Pacific coast, special 

 attention being given to collecting in the higher altiudes of the 

 intervening mountainous and volcanic regions. 



Professor Kellerman has very generously sent much of his 

 material to a number of workers for identification and study, the 

 collections of rusts with some notes having been placed in the 

 hands of the writer. The present communication is a report 

 of the studies upon the larger portion of the material. There still 

 remain a number of specimens, some of which may be unde- 

 scribed, but concerning which no definite conclusions have yet 

 been reached. In all determinations and in the drawing up of 

 descriptions of new species the writer has been aided by Prof. J. 

 C. Arthur and enjoyed the privilege of access to his herbarium 

 and library. 



In many instances new hosts have been added and the geo- 

 graphical distribution has often been extended. It has been 

 found necessary to describe several species as new. Perhaps the 

 most notable single collection is the Aecidium on Byrsonima 

 crassifolia. The species are distributed among all the larger 

 groups of the Uredinales. 



I. COLEOSPORIUM IPOMOEAE (Schw.) Burr. — 

 On Ipomoca macrocalyx (Ruiz. & Pav.) Choisy (host no. 5187). 

 Laguna. Depart. Amatitlan, alt. 1200 m., Jan 20, 1906, no. 5408 



* Contributions to Guatemalan Mycology IV. (The three previous 

 articles in this series were by W. A. Kellerman.) 



