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effected is a problem I will endeavour to solve, next year if I can, and I am not 
without hopes of being able to do so. 
Puccinia rubigo vera is unusually abundant this year, not only upon various 
grasses, such as Holcus lanatus, H. mollis, Bromus stertlis, and Hordeum murinum. 
but also upon rye and wheat. Uvpon the former I found it not only abundant upon 
the leaves and stem, but also upon the glumes. Upon the latter, since Mr. 
Marshall sent me teleutospores a week ago, I have found it in great abundance in 
every wheat field, and I have examined since then a great many in various vil- 
lages around Kings Lynn. A variety of Puccinia rubigo vera, the var. simplex of 
Kornicke,* occurs in Germany and Denmark as well as in this country. It was 
first described by Fuckel+ as a distinct species, under the name of P. Hordei 3 on 
the upper surface of the leaves and on the sheaths of Hordeum murinum. Speci- 
mens were published by Thiimen,t under the name P. anomala, Rostrup. 
It is characterised by the small size of its pustules, and by the teleutospores 
being nearly or entirely one-celled, the upper compartment being more or less in 
abeyance. The teleutospores measure 44 mk, long by 20 mk. wide. 
There is no doubt that the T’richobasis glumarum is nothing more than the 
Uredo of Puccinia rubigo vera, for although the spores are not very distinctly 
verrucose, yet careful examination of them, dry, will show that they are not 
smooth. The ordinary form of the Uredo spores also loses it roughness, to a 
great extent, when examined in water. The glumes which were earlier in the 
year affected with the Uredo, will be found later on to bear the teleutospores. 
Appended are the spore measurements of the Puccinia rubigo vera, expressed 
in micromills (i.e., +. millimetre) :— 
1000 
Uredo, 20—32 by 17—24 Paraphyses, 50—70 long 
Puccinia, 26—80 by 16—24 Aicidium, 18—20 
Promycelium spores, 10—15 long Spermogonia, not known 
The _Zcidium in Europe is known to occur on §— 
Cynoglossum officinale Cerinthe minor 
Borago officinalis » alpina 
Anchusa officinalis Kchium vulgare 
Lycopsis arvensis Pulmonaria officinalis 
Nonea pulla 3 tuberosa 
Symphytum officinale Lithospermum arvense 
+ tuberosum 
Puccinia rubigo vera in Europe is known to occur on*— 
Calamagrostis epigejos Bromus asper 
Holcus lanatus Triticum vulgare 
» mollis Secale cereale 
Arrhenatherum elatus Hordeum vulgare 
a 
— 
“| 
* Kornicke, Land und Forstw. Zettg., 1865, No. 50, 
+ Fuckel, Sysnbol Mycol, Nachtr., ii., p. 16. 
{ Thiimen, Herbarum Mycol. Gconon,, No. 451 : 
§ Winter, G,, Synopsis Uredineen tind threr Nahrpflanzen (reprint from Hedwigia), p. 12. 
