ON THE BLUE REACTION GIVIN BY IOLINE IN CERTAIN FUNGI. 43 
which occur through cultivation 
however, occur in localities so open to suspicion, that their appearance 
is more probably owing to intentional planting than to accident, 
e.g, Corydalis lutea, Saponaria officinalis, Convallaria majalis, and in 
the Boscastle station, Centranthus ruber. Petroselinum sativum occurs in 
several neighbourhoods ; not as usual on old walls, but on hedge-banks. 
any plants of common occurrence elsewhere have not been observed ; 
of these not a few will reward the search of future investigators. To 
It is not necessary to particularise the plants in the above list 
or as agricultural weeds. few, 
any one able to visit the neighbourhood in sp y summer 
an opportunity will be afforded of enlarging the above list. _d//iu 
Schenoprasum has b inserted the authority of Babington’s 
e 0 Babi 
Manual. It is as well to correct two mistakes in one of the local 
guide books, which gives Zrifolium stellatum for T. arvense at Tintagel, 
and Asplenium Trichomanes for A. Adiantum nigrum in the porch of 
Moorwinstow Church. A very few species have been set down in 
doubt, which are of course open to correction. 
ON THE BLUE RE-ACTION GIVEN BY IODINE IN 
CERTAIN FUNGI. 
By Wituuam PuHitures. 
E great advantages derived from chemical tests in the classifica- 
tion and study of Lichens, first noticed by Dr. Nylander, of Paris, and 
subsequently adopted by the Rev. W. A. Leighton in his “ Lichen 
lora of Great Britain,” has led to the idea that a similar use of 
chemical tests may be made in the study of Fungi; but up to the pre- 
sent time nothing, as far as I am aware, has been recorded in the way 
of a systematic application of any test, nor does there exist much 
evidence from actual experiment to show that help can be looked for 
fe pe ' 
the same effect is produced in the matter contained in the summits of 
the asci and upon the mucous envelope of the sporidia of several species 
} N 
of : 
10, 1865) that certain species of Pestze are affected by iodine in a 
similar manner, viz., P. Polytrichit, Schum., P. cochleata, Huds., 
