1890.] occurring in the Neighbourhood of Simla. 77 



adherent, and remain in a quiescent state until the following year, when 

 they germinate and reproduce aecidia on the newly developed leaves. 

 Experimental evidence, which will be found detailed in the above-men- 

 tioned paper, fully confirmed the autoecious nature of the fungus. 



The aecidiospores are round or oval pale yellow bodies, and measure 

 on an average 16//. in diam. They are tuberculated on the outer sur- 

 face. Their mode of germination is quite peculiar. A germ tube is 

 emitted, about 35/x in lengthy which then divides into two by a 

 transverse septum, and each part forms a long narrow sterigma, which, 

 however, forms no sporidium, but directly penetrates the host to form 

 another mycelium, bearing aecidiospores at first (but no spermogonia) 

 and teleutospores later. 



The peridium is formed of a single layer of cells about 26 X 19/x in 

 size. 



The spermogonia accompany the first crop of aecidia: they are not 

 numerous, and measure about 145//. in depth and width. They have a 

 tuft of protruding parapliyses. 



The teleutospores are brown single-celled bodies, thickened at the 

 free end, firmly adherent to their beds, becoming detached with a portion 

 of stalk adhering. They measure 36 x 20/x on an average. They ger- 

 minate after a winter's rest in the usual way, each promycelium forming 

 three sporidia as a rule, but sometimes four. 



The sporidium is oval, and measures 12 X 8/x to 14 X 10//,. Secon- 

 dary sporidia are abundantly formed, often before the primary one has 

 become detached. 



3. Uromyces Valeriana, Schum. 



On Valeriana Wallichii, D. C. 



For a description of this species see the Journal of this Society, 

 Vol. LVI, Part II, No. 3, 1887, page 352. 



Dr. P. Dietel (Leipzig) to whom I sent specimens of this fungus 

 thinks it is a new species. 



c. LEPTUROMYCES, Schroter. 

 4. Uromyces Solidaginis, Niessl. 



Cn Solidago Virgaurea, L. 



This host may be found in some localities largely attacked in 

 August and September. Attention is drawn to the fungus by the cir- 

 cular discoloured patches produced, mostly on the radical leaves, but 

 sometimes also on higher leaves. An attacked plant, however, does not 

 usually form a flowering stalk. These discoloured patches (pale yellow) 



