1887.] in the Neighbourhood of Simla. 351 



In the first place, it will be observed that I have related several of 

 them with a mark of interrogation to species already described as 

 occurring in Europe. Until the complete life-histories of these are 

 known, it is impossible to state definitely whether they are correctly so 

 related or not. They are probably all varieties of, or identical with, 

 the European forms with which I have associated them. In only one 

 case (that of JEcidium Urticce, Schum.) has the life-history of the 

 Indian variety been fully traced. 



Five of the species described are I believe quite new, in only one of 

 which (^cidium Strohilanthis) have I been able to trace the whole life- 

 history. That on the wild strawberry {Fragaria vesca) appears to be a 

 complete autoecious Uredine, but I have unfortunately not been able to 

 prove this by actual experiment. And, in this connection, I would 

 again draw attention to the inconvenience caused by the system of 

 nomenclature now adopted of naming species of Uredines after their 

 teleutosporic forms, an inconvenience which it appears to me will 

 increase as our knowledge of this family is extended, for it sometimes 

 happens that a host bearing an secidium bears also a teleutospore, 

 which, however, has no relationship whatever with the secidium. For 

 example, according to this principle, I have been obliged to name the 

 ^cidium which occurs on Valeriana Wallichii Uromyces Valeriance, 

 although I have abundant evidence that the teleutospores have no 

 genetic relationship whatever with the ^cidium. In all probability, 

 future investigation will show that the Uromyces borne on this host is 

 related to some other ^cidium on an entirely different host, whilst 

 the teleutospores borne on some other host are related to the ^cidium 

 on the Valeriana in question. In the cases of Strolilanthes Dalhou- 

 sianus and TJrtica parviflora, which bear ^cidia whose complete life- 

 histories are known, teleutospores (puccinia) are also borne, which, 

 however, have no relationship with the ^cidia.=* The ^cidium 

 on Jasminum revolutum presents no unusual features, but those on 

 Euphorbia cognata and Andrachne cordifolia display aberrant features 

 of great interest. Indeed, these two ^cidia differ so markedly from all 

 others that I have regarded them, provisionally, and until I shall have 

 had further opportunities of working out their complete life-histories, 

 as belonging to a new genus, which I propose calling Monosporidium. 



With these introductory remarks I shall pass on to a description of 

 the several species. 



* See " Scientific Memoirs by Medical Ofiicera of the Army of India, " Part II, 

 Calcutta, 1887. 



