260 



ON SOME RUSTS AND MILDEW! 



laud, Germany, Hungary, Bohemia, Norway, Russia, Belgium, 

 Asiatic Siberia, and North Africa. 



Ueom?ces Pisi Perg. '? on Clcer arietinum L, (" Channa"). 



I obtained some good specimens of a fungus on this host, also 

 from Dumraon, gathered on 4th April. There were small circular 

 or oval brownish pustules on the leaflets, with a tendency to 

 coalescence. They were both epi- and hypophyllous, though 

 apparently more often hypophyllous. 



The uredospores are brownish red, mostly spherical, sparsely 

 covered with spines, and each apparently with four germ-pores 

 (fig. 5). The dry spores, just immersed in water, measured 

 25-20 x 21-20 jx. I placed some of these spores in water on the 

 2nd May, and they germinated freely in twenty-four hours, throw- 

 ing out a long, simple, unbranched tube, quite colourless (fig. 5, a.). 

 This germination a month after gathering is noteworthy. I could 

 find no teleutospores in the specimens gathered, and as these were 

 full-grown and ready to reap, I conclude none are formed. 



Remarks. — This may be Uredo Ciceris-arietini Grogn. ; but the 

 only reference available to me is that in Saccardo's ' Sylloge 

 In this book it is said to be found on the leaves of the same host in 

 the Saone and Loire provinces of France. In a recent article by 

 Schroter, on the Fungi of Servia,- he notes a uredo on Cicer 

 Fungorum,' and here no description or measurements are given. 

 arietinum, but includes it under Uromyces Pisi Pers. Saccardo 

 records the fungus in Italy, Sicily, France, Belgium, Britain, 

 Austria, Germany, Bohemia, Switzerland, aud Asiatic Siberia. 



Uromyces Pisi Pers. on Latkyrus sativus L. (" Khesari "). 



From Dumraon I obtained specimens also of this plant bearing 

 a Uromyces, gathered on 4th April. There were numerous dark 

 pustules, round to oval or broadly linear, on the stem mostly, but 

 also on the leaves. On the latter they are apparently amphi- 

 genous. The pustules contained both uredo- and teleutospores, the 

 latter in excess. 



The uredospores are orange-red, with a tendency to brownish. 

 They are oval for the most part, spiny, and with five to six germ- 

 pores (fig. 6, c). The dried spores just immersed in water 

 measure 28-23 x 22-20 li. These spores, after lying twenty-four 

 hours in water, had germinated freely, throwing out a single, long, 

 unbranched tube, at the distal end of which were collected the pale 

 reddish brown contents, leaving the empty spore-case dingy 

 yellow (fig. 6, a). The spores now measured 25-21 x 24-21 /*. I 

 observed the uredospores germinating even as late as the middle of 

 June, i. e., more than two months after they were gathered. 



The teleutospores are more or less oval aud chestnut-brown, but 

 vary considerably in size and shape (fig. 6, d). A nuclear space 

 and germ-pore at the apex are clearly visible. The epispore is 



* ' HecVwipia,' Band xxix. Heft 2, 18 l J0. 



