CLUSTER-CUPS. 7 



when dispersed they are scattered singly about the 

 orifice^ often mixed with the colourless cells arising 

 from the partial breaking up of the teeth of the 

 peridium. 



Let us pause for a moment in our examination of 

 the individual cups^ to ascertain their manner of 

 distribution over the leaves. In this instance they 

 are scattered without any apparent order over the 

 under-surface^ but generally thickest towards the 

 summit of the leaves ; occasionally a few are met 

 with on the upper surface. Sometimes two or 

 three touch at the margins^ but we have never 

 met with them truly confluent ; generally there is 

 a space greater than the width of the cups around 

 each^ the stratum or subiculum from whence they 

 arise is scarcely thickened^ and there are no spots 

 or indications on the opposite surface. If a leaf 

 be taken fresh and the cuticle stripped off^ which 

 it will sometimes do very readily^ the orifices 

 through which the ^cidium has burst will appear 

 in irregular holes. If a section be made of one or 

 two of the fungi in situ, they will be seen to 

 spring from beneath the cuticle_, the peridium to 

 be simple^ and rounded at the base_, the spores 

 clustered at the bottom_, and the fringe to be a 

 continuation of its cellular substance. 



The spores in this species are orange^ subglo- 

 bose^ sometimes angular, and indeed very variable 

 both in size and form, though the majority are 

 comparatively large. Each of these bodies is, 



