100 FUNGI. 



and, if observed separately, is found to be provided with a 

 brownish, finely verruculose, dotted wall. 



The same mycelium which forms the pedicel for the conidia 

 when it is near the end of its development, forms by normal 

 vegetation a second kind of fructification. It begins as delicate 

 thin little branches, which are not to be distinguished by the 

 naked eye, and which mostly in four or six turns, after a quickly 

 terminated growth, wind their ends like a corkscrew. (Fig. 102.) 

 The sinuations decrease in width more and more, till they at last 

 reach^ close to one another, and the whole end changes from the 

 form of a corkscrew into that of a hollow screw. In and on 

 that screw-like body, a change of a complicated kind takes place, 

 which is a productive process. In consequence of this, from the 

 screw body a globose receptacle is formed, consisting of a thin 

 wall of delicate cells, and a closely entwined row of cells sur- 

 rounded by this dense mass (d). By the enlargement of all these 

 parts the round body grows so much, that by the time it is ripe 

 it is visible to the naked eye. The outer surface of the wall 

 assumes a compactness and a bright yellow colour ; the greater 

 part of the cells of the inner mass become asci for the formation 

 of sporidia, while they free themselves from the reciprocal union, 

 take a broad oval form, and each one produces within its inner 

 space eight sporidia (e). These soon entirely fill the ascus. 

 When they are quite ripe, the wall of the conceptacle becomes 

 brittle, and from irregular fissures, arising easily from contact, 

 the colourless round sporidia are liberated. 



The pedicels of both kinds of fruit are formed from the same 

 mycelium in the order just described. If we examine attentively, 

 we can often see both springing up close to one another from the 

 same filament of a mycelium. This is not very easy in the close 

 interlacing of the stalks of a mass of fungi in consequence of 

 their delicacy and fragility. Before their connection was known, 

 the conceptacles and the conidia pedicels were considered as 

 organs of two very different species of fungi. The conceptacles 

 were called Eurotium herbariorum, and the conidia bearers were 

 called Aspergillus glaucus. 



Allied to Eurotium is the group of ErysipJiei, in which well- 



