194 



FUNGI. 



will soon be discovered that, instead of being simple rounded 

 heads, each tubercle is composed of numerous smaller, nearly 

 globose bodies, closely packed together, often compressed, all 



FIG. 105. Section of Tubercularia. c. Threads with conidia.* 



united to a base closely resembling the base of the other 

 tubercles. If for a moment we look at one of the tubercles near 

 the spot where the crimson tubercles seem to merge into the 

 pink, we shall not only find them particoloured, but that the red 

 points are the identical globose little heads just observed in 

 clusters. This will lead to the suspicion, which can afterwards 

 be verified, that the red heads are really produced on the stem 

 or stroma of the pink tubercles. 



A section of one of the red tubercles will show us how much 

 the internal structure differs. The little subglobose bodies 

 which spring from a common stroma or stem are hollow shells 

 or capsules, externally granular, internally filled with a gelatinous 

 nucleus. They are, indeed, the perithecia of a sphasriaceous 

 fungus of the genus Nectria, and the gelatinous nucleus contains 

 the fructification. Still further examination will show that this 

 fructification consists of cylindrical asci, each enclosing eight 

 elliptical sporidia, closely packed together, and mixed with 

 slender threads called paraphyses. 



Here, then, we have undoubted evidence of Nectria cinna- 

 barina, with its fruit, produced in asci growing from the stroma 

 or stem, and in intimate relationship with what was formerly 

 named Tubercularia vulgaris, A fungus with two forms of fruit, 



* Figs. 104 to 106 by permission from the "Gardener's Chronicle." 



