40 



Horsley also exhibited a slide showing " nettle cluster cups," 

 and read the following short paper thereon : — A very pretty 

 ^cidium is far from uncommon on the petioles of the leaves 

 and on the stem of nettles, distorting them very much, and in 

 such situations flourishing, apparently more vigorously than when 

 occupying the under surface of the leaves. In the latter situation 

 the clusters of peridia are small, seldom exceeding a dozen in a 

 spot, but several spots may be found on the same leaf. On the 

 stem they are clustered around for upwards of an inch in length, 

 and their bright orange colour in such a situation renders them 

 very conspicuous objects. The peridia are always packed 

 closely together upon a thickened base, and offer but slight 

 variations in form, save that they widen slightly at the mouth, so 

 as to become nearly campanulate. The spores are orange and 

 very profuse. The specimen on the slide is a small portion of 

 an .i-Ecidium on the stem of a nettle, and shows the clusters of 

 peridia filled with orange spores. 



