TO PUCCINIA GRAMINIS, PERS. 
41 
much patient work and careful consideration that I felt myself 
bound to differ from the eminent botanists abroad who do accept 
the hetercecism of Puccinia graminis as established beyond 
question. 
There are two other experiments not included in the above 
thirteen which were performed by me that I think worthy of 
notice. 
Experiment No. 36. — On the 2nd August one oat plant with 
10 leaves upon it was inoculated with A Ecidium berberidis spores. 
A very large quantity of ripe AEcidium spores was used — on the 
15th day Uredo appeared upon the oat plant. On the 9th Sep- 
tember (38th day) these Uredo spores were examined and found to 
be the Uredo of Puccinia coronata Corda. Now had this ex- 
periment been carelessly performed the inference would have been 
that the AEcidium spores had produced the Uredo of P. graminis. 
Experiment No. 40. — Six wheat plants were infected with the 
spores of Uredo linearis at 4 p.m. on the 13th August. On the 
24th they all were simultaneously affected with Uredo showing 
that the Uredo had reproduced itself in 11 days. 
NEW BRITISH FUNGI. 
By M. C. Cooke. 
(Continued from Vol. ix, p. 126.) 
Agaricus (Tricholoma) ori-xubens, Quelet, 
Pileus fleshy, convex, fragile, smooth, grey , brownish in the 
centre, clad with blackish fibrils ; stem solid, fibrous, white, 
streaked with rose at the base ; flesh white, odour mealy ; gills 
emarginate, undulated, white with the edge rose; spores oval, 
white. Quelet, Champ, du Jura et des Vosges , p. 327. 
On the ground. Near Hereford, 1881. 
Agaricus (Clitocybe) catinus, Fr. Hym. Eur., p. 99. 
White, becoming discoloured ; pileus fleshy, thin, plane, then 
infundibuliform, flaccid, dry, smooth ; stem stuffed, elastic, erect, 
somewhat attenuated upwards; gills decurrent, rather crowded, 
white. Fr. Icon., t. 51, f. 4. 
Among dead leaves. Near Ludlow, 1881. 
About the size, or rather larger than Agaricus infundibuli formis, 
and similar in habit. 
Agaricus (Clitocybe) difformis, Pers. 
This species, inserted in Cooke’s “ Handbook,” No. 105, in 
succession to Berkeley’s “Outlines,” p. 112, must now be ex- 
cluded. The figure of Bolton (t. 17) is undoubtedly Agaricus 
pithyophilus , and this is the only slender evidence on which it has 
been assumed that Ag. difformis is found in Britain. As this 
notice includes both “ Outlines ” and “ Handbook,” it may be 
added that the Rev. M. J. Berkeley concurs. 
