1904.] 



NOTES ON THE JAPANESE FUNGI. 



Uromyces truncicola. Only the verrucose thickening of the wall of the 

 spore of the present species, which might, however, be overlooked sometimes 

 under low power of microscope, is of much diagnostic value. 



The teleutospores germinate in the next spring and the sporidia pro- 

 duced on them will certainly effect the primary infection on the host 

 forming the diseased spot as has been stated above. Hence the present 

 species belongs to Br achy uromyces. 



Since these two Uromyces are found together on the same plant and 

 produce also similar teleutospores hardly distinguishable from each other 

 at the glance, and since the mode of infection is nearly the same in 

 both, it will scarcely possible to determine them, if their life history were 

 quite unknown. So the followings are necessary for their distinction : — 



Uromyces truncicola. 



Uromyces Sophora- japonicce. 



1. It belongs to Microuromyces, 



perennial in the cortex. 



2. The primary infection takes place 

 on the stem of a young shoot 

 which suffers a slight hypertrophy 

 and becomes pale yellow. 



3. The point of primary infection 

 is permanently inhabited by the 

 fungus producing annually teleuto- 

 spores. 



4. A typical teleutospore is sub- 

 globose, obtuse at the apex, some- 

 what narrows towards the base. 

 It is chestnut brown. 



5. It measures more than 40 ;>. in 

 length and less than 25-26 fi in 

 breadth. See the following: — 



It belongs to Brachyuromyces. 



The primary intl-ction takes place 

 on the petiole or blade of a young 

 leaf, where it causes an hypertrophy 

 and discolouration as in U. trun- 

 cicola. 



The point of primary infection is 

 temporarily inhabited by the 

 fungus, it perishes soon after, and 

 the fungus comes to develope on 

 the other places, generation after 

 generation. 



A typical teleutospore is globose or 

 ovoid, pointed at the apex with a 

 conical thickening of the wall, 

 rounded at the base. It is dark 

 chestnut brown. 



It measures less than 40 ft in length 

 and more than 25—26 /i in breadth. 

 See the following : — 



