15 July lOOo.] 



Mycfllogical Bulletin No. ns 



151 



A«E THE OMpriALiAS F.DiELE? — For tliis phase of the subject we will 

 quote a good author on mycophagy, Mcllvaine, who says: "Raw, the 

 writer has not found one that is objectionable in any way; a few have a 

 woody taste. But two species have been found by him in sufficient quantity 

 to make a d'sh. It is probable that all are edible. 



Grape jMildew ok Peronospora. — Again we interpolate a parasitic 

 fungus that can not be called a Mushroom, but which nevertheless is very 

 interesting both from the scientific and economic point of view. On the 

 preceding page is given (Fig. 123) an etching which represents in a dia- 

 grammatic way, the well known enemy of the vineyards. The large figure 

 to the left is intended to represent a magnified section through a grape 

 leaf. The row of cells forming the protecting outer layer of the leaf above 

 and below, is the epidermis. The cells between are full of protoplasm (not 

 evident in the figure) and chlorophyll grains (leaf-green). Between these 

 cells, and drawing nourishment from them, are the tube-like cells (called 

 hy-phac) which form the body of the parasite. As seen it has developed 

 upright (downright in this case) straight branching cells; all these are 

 called co-iiid'-i-o-phores, because they bear the spores which are called 

 eo-iiid'-i-n. The latter are the summer spores ; they germinate at once, 

 infect other plants in the vineyard, and so multiply the parasite rapidly 

 when climatic conditions arc favorable. The remainder of the story must 

 be told in a later No. 



1 



X 18(0 



Fig. 1-?4. ^roR-cnEi.'-i.A bis'-po-ra. Two-store Morel. A vertical section 

 lhrou.i»li the mi. Idle of the ])lant sl-.ows the interior structure. It is seen that the stem 

 is hollow ami the cap attached only at its apex. The drawings to the right show the 

 spore cases (as'-ci), each containing two spores, also slender cells accompanying the 

 asci (whicii may perhaps he really immature or ahortive asci), called the pa-raph'-y- 

 srs. The plant is shown natiual size, but the asci and spores are represented as mag- 

 nifu-d 1S() diaiiiettrs. 



