174 MICROSCOPIC FUNGI. 



parasitism. It is found also on other plants of tlie 

 same natural order, on the rest-harrow, trefoils, 

 enchanter^s nightshade, bindweed, and knotgrass. 

 There are from four to eight sporangia in each con- 

 ceptacle, containing from four to eight spores (fig. 

 241). In this species, more especially, M. Tulasne 

 found curious sucker-like processes developed on 

 the threads of the mycelium (fig. 242) : their office 

 may probably be only that of attachment. 



Of the other species found in Britain an enume- 

 ration will suffice, since they contain no feature of 

 interest to the microscopist ; and all the members 

 of this section are far less beautiful than those in 

 other genera (especially Microsphceria) . 



The leaves of the dogwood or cornel (figs. 245, 

 246) are the home of one species {E, tortilis, Lk.), 

 and the burdock of another (_£/. Montagnei, Lev.). 

 Both of these, in addition to the above, have spo- 

 rangia which contain more than two spores. There 

 are also two species in which only two spores are 

 contained in each sporidium. One of these {E, 

 Liiihii, Lev.) is found on both surfaces of the leaves 

 of the mugwort (figs. 248, 249) ; the other {E. lam- 

 jprocarpa, Lev.) occurs on salsafy, scorzonera, 

 weasel-snout, and plantain (figs. 250, 251). 



These complete the Erysiphei; but there are allied 

 species of too much interest not to be noticed in 

 connection with them. Three very singular fungi 

 are found on damp straw and paper ; two on the 

 former and one on the latter. Of the species 



