1889.] 



occurring in the noiglilmirliood of Simla. 



243 



Tho urodosporos are light brown, mostly round, some oval or pyri- 

 form, with a tiibcrculatod or spiny epispore. They measure, when just 

 moistened, about 25 /x. in diameter. They germinate very readily in 

 water, throwing out an ordinary germ tube, simple and unbranched. 

 When germinating, they are seen to possess 2 to 3 germ pores. 



The teleutospores fall off easily, with a short piece of stalk adher- 

 ing. They are brown, rounded at both ends, little or not at all con- 

 stricted at the septum, without apical thickening as a rule, and with a 

 tuberculated or spiny epispore. When just wetted, they measure about 

 28 /i in total length by 20 fx. at the septum. The septum divides the 

 spore into two equal halves. These spores also germinate readily at 

 once. The promycelium is short, and usually produces 3 to 4 sporidia 

 on very short stcrigmata. The sporidia are oval, measuring 8-5 x 6"5 jx 

 to 10 X 8 IX.. They germinate readily, throwing out a fine long germ 

 tube (Figs. 16, 16, PI. XII). 



Bemarks. — I have called this P. Mentlim, provisionally, as the uredo- 

 sporos and teleutospores agree in characters with those of that species. 

 It must be observed, however, that the cecidium is unknown here, and 

 I have therefore placed the parasite under Uemipueciida, and not under 

 A'Uteupiiccinia, as is of course done in Europe, where the ajcidium also 

 occurs on the same host. In this respect, both this Indian species and 

 that on Taraxacum officinale (see above) are interesting in being unac- 

 companied by EBcidial fructification. Biological evidence may show, 

 later, either that the sjDecies is distinct from the European, or that tho 

 socidial fructification on the same host in Europe is not genetically re- 

 lated with the uredo- and toleuto-spores. 



d. Eupuccinia (heteroecious). 



12. PucciNiA PoLLiNiiE, Barclay, 

 on Pollinia nuda, Trin. 



This is an exceedingly abundant species, and is related to the 

 JEcidium on Strohilanthes Dalhousiamis, Clarke {JEcidium Strohilan- 

 this, Barclay*). Uredopustules are situated mostly on the under surface 

 of the leaf, and are not numerous : they ai-e oval or shortly linear. Tho 

 uredospores are pale brown, and the epispore is beset with tubercles. 

 They measure on an average 21 '6 x 20'2 fx. 



The teleutospore beds are usually very numerous on each attacked 

 loaf, mostly in the lower surface ; they are long, linear, and black. Tho 

 spores germinate readily immediately after ripening, as well as after a 



* On tho Life nistory of a new JEciiUum on Strobilanthes Dalhousiamis, Clarke. 

 ' Scieutiflo Momou-s by Medical Officers of tho Army of India,' Part II, Calcutta, 1887. 



