30 



but besides there is another important structure which must not be 

 overlooked. I mean the envelope or the wall of the compound sporophore 

 which covers at first the whole spore-masses and remains attached after 

 its rupture, forming a crisped thin membranaceous pieces near the 

 husks of the deformed grain (Fig. A). This wall is comparatively 

 thick and composed of many layers of branched hyphse running parallel 

 to one another and forming here and there H-shaped connections as 

 shewn in the annexed figures (Figs. B, C). These hyphse are hyaline, 

 distinctly septate, and have a wide lumen ; of these, those situated 

 near the surface consist entirely of sterile filaments, and those running 

 near the spore-producing layers still retain their power of producing 

 rudimentary spores (Fig. C). The sporogenous hyphse formed between 

 this wall and the central medulla are of very sticky nature, as it is 

 usually the case with many other Ustilaglnece, owing to a thick 

 gelatinous wall ; they have no distinct septum, have a very narrow 

 lumen as shewn in Fig. D, and are gradually used up to form spores 

 so that at maturity only heaps of spores remain. We cannot find 

 any such permanent hyphse as shewn in Mr. Takahashi's figure among 

 the ripe spores of the outermost layer. In short, as regards the 

 structure of the sporogenous hyphse, more especially as to the mode of 

 spore-formation, his statement is not correct, his figures which shew 

 different stages of spore-formation being decidedly erroneous ; we can 

 find in the true sporogenous hyphse neither septa nor sterigmata 

 resembling those of his figure. 



On the other hand, his figures correspond pretty closely to the 

 spore-bearing hyphse found in the inner layers of the wall covering 

 the spore-masses previously mentioned ; but here the longer projections 

 found on the lateral wall of the filament do not represent sterigmata 

 at all, but only broken pieces of the transverse projections of 

 H-shaped connections (Fig. B). 



B 



G 





I) 



