1890.] occurring in the Neighbourhood of Simla. 99 



immediately dissociates the spores. Even when a leaf bearing these 

 columns is first hardened in absolute alcohol the columns do not attain 

 any greater coherency. 



The individual spores are obovate or club-shaped, and fairly densely 

 covered with spines. They are pale orange yellow, and measure about 

 30 x 18 to 27 x lfyt, when fresh (fig. 9, PI. IV). 



The earliest formed pustules are yellowish in colour, but later, at 

 the end of August, when the fungus is extremely common, the pustules 

 are bi'own. The leaves are now old and this may be the sole reason, 

 for the spore columns and spores are identical in size and structure, 

 though the latter are also brownish now. Placed in water the spores of 

 both colours germinate similarly, exactly like uredospores, and very 

 readily, even up to the middle of October. 



In August, when the parasite is beginning to appear, I tied some 

 leaves bearing yellow pustules to a plant in my garden which was quite 

 healthy, and in September many of its leaves were studded with similar 

 yellow pustules. 



Although I looked carefully and continuously for some teleutosporic 

 form I never found any trace of such. 



4. Uredo Apludae, nov. sp. 



On Apluda aristata, L. 



This grass harbours a uredo bearing fungus towards the end of 

 September, but I have never found any teleutospores on it. The uredo 

 pustules are brown, small, oval to linear, very inconspicuous in that it 

 gives rise to no appreciable discolouration in the blade, and entirely 

 hypophyllous. The spores are round to oval, pale brown, thick walled, 

 and measure when fresh 22 x 20fi on an average. Some few are much 

 larger, viz., about 30 x 21//,, The epispore is densely beset with minute 

 tubercles, and has four germ pores. At the end of October I found the 

 same pustules even on drying leaves. 



5. Uredo Gompheenatis, nov. sp. 



On Gomphrena globosa, L. 



Late in October this host is largely attacked in certain localities 

 only. In such places the lower surfaces of the leaves are often densely 

 besprinkled with dark brown, minute, circular pustules, whilst only 

 exceptionally are some found on the upper leaf surface. The upper 

 surfaces of attacked leaves are very slightly paled opposite spore beds 

 on the other side. Spore beds are also formed on the stems and are here 

 linear or oval. The spores are very deciduous, and there are no para- 

 14 



