ON SOME RUSTS AND MILDEWS IN INDIA. 261 



very finely tuberculated, and not thickened anywhere as a rule, 

 though occasionally a slight thickening at the apex is observable. 

 A piece of stalk usually adheres to the spore. After lying some 

 hours in water the spores measured 32-23 x 19-14 p. They 

 refused to germinate, apparently requiring a long period of rest. 



Remarks. — Four species of Uromyces are recorded in Saccardo's 

 ' Sylloge Fangorum,' on species of Lathyrus, namely, U. Fabm 

 Pers., U. Pisi Pers., U. Lathyrinus Speg., and U. polymorphic 

 P. & C. The Indian species corresponds fairly closely with U. Pisi, 

 and may, at any rate provisionally, be classed with it. At the 

 same time no iEcidiuni on any species of Euphorbia is yet known 

 in the plains of India, though such might be found on search. In 

 the description of the fungus on Gicer arietinum mention was made 

 of Schroter's article on " Servian Fungi," and I observe that he 

 includes a Uredo and Uromyces on Lathyrus latifolius also under U. 

 Pisi; in other words, the two fungi on C'icer and Lathyrus are, 

 according to him, identical. The characters of the uredospores, as 

 I have described them above, agree closely enough to warrant the 

 assumption that they are identical, the only difference being that 

 whilst I could find only four germ-pores in the uredospores from 

 C'icer I found five to six in those from Lathyrus. But this point is 

 difficult to be very certain about. 



Puccinia Fagopyri Barclay, on Fagopyrum esculentum Moench 

 (" Phapra," " Ogra," " Kathu "). 



I have described this fungus elsewhere,* but my knowledge is 

 imperfect. I found plants very largely attacked in October, the 

 leaves bearing immense numbers of black and brown pustules all 

 hypophyllous. The brown pustules contained uredospores, which 

 are pale brown, echinulate, oval, 23 x 18 p.. on an average. When 

 placed in water they germinate in the usual way. The black 

 pustules contained teleutospores, which are deciduous, with a small 

 fragment of stalk adhering to the detached spore. They are dark 

 brown, very variable in size and shape, slightly constricted at the 

 septum, smooth on the surface, slightly thickened at the apex, and 

 measuring 36-25 x 13-11 p. The upper cell is often much broader 

 than the lower, and is more or less globular. The apical thicken- 

 ing measures 4 p., whilst the rest of the cell-wall is 2 p. 



Description of the Plate. — 1, P. Sorghi?: a, uredospore, x 350; b, c, 

 teleutospores, x 350 ; d, paraphyses, x 350. 2. P. Sorghi ? : germinated 

 teleutospore. 3. Ditto, x 150. -1. Melampsora Lini: a, ureclospore, x 350; 

 b, teleutospore, x 350. 5, Uromyces Pisi ? on C'icer : a, germinated uredospore, 

 X 220; b, ditto, 350x220. Uromyces Pisi, on Lathyrus: a, germinated 

 uredospore, x 220 ; b, ungerminated uredospore, x 350 ; c, germinated uredo- 

 spore, showing germ-pores, x 350 ; d, teleutospores, x 350. 



1 Journal of the Asiatic Society of Bengal,' vol. lix. pt. 2, No. 2, 1890. 



