﻿BOTANICAL GAZETTE 



fundamental plectenchyma. In fig. 36, which is from near the 

 margin of the young hymenophore, in a few places very slight salients 

 are shown, but the lighter colored trama tissue is seen slightly 

 projecting into some of them. Fig. 37 is from a section nearer the 

 stem, where the salients have reached their greatest development 

 in this particular basidiocarp. Here some of the salients are 

 quite pronounced, but the palisade layer is continuous over and 

 between them. There is no continuity of the trama of the pileus 

 through the salients with the fundamental plectenchyma below, 

 but the loose threads of the shredded fundamental tissue below 

 connect indifferently with the margin of the salients or with the 

 portions of the hymenophore between them. In the figures just 

 cited and also in figs. 34 and 35 it is very clear that the first salients, 

 or ridges, of the hymenophore are the fundaments of the lamellae 

 themselves. They do not split, and approximate halves of adjacent 

 ridges unite to form the lamellae, as has been said to be the case in 

 C. micaceus (Levine 22). 



Attachment of the lamellae to the stem. — Since the gill 

 cavity is weak, the lamellae become attached to the stem at quite 

 an early stage. At or near maturity they are quite firmly attached 

 to the stem, or the fundamental plectenchyma surrounding the 

 stem, the edge of the lamellae for its entire thickness being very 

 closely and compactly pressed against the surface of the stem, while 

 the hyphae from both structures are more or less interlaced. A 

 rather loose floccose layer of fundamental plectenchyma clothes 

 the young stem, to which the lamellae become attached. This 

 loose layer of irregularly interwoven hyphae is present in the mature 

 plants, but becomes more compacted, probably because of the pres- 

 sure to which it is subjected between the lamellae and stem. As the 

 plants age, this zone of fundamental plectenchyma clothing the stem 

 contrasts strongly with the stem structure, as seen in figs. 43 and 44. 



The loose shredded character of this fundamental plectenchyma 

 in the young basidiocarps is very favorable for the interlocking 

 with it of the slender hyphae which grow out from the edges of the 

 young lamellae. This interlocking of hyphae is shown in figs. 41 

 and 42, which represent different stages. The slender hyphae on 

 the edge of the lamellae, pushing their way into the mesh of the 



