TREMELLALES 



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species, Hyaloria Pilacre (Moller, 1895), forms shining, almost transparent 

 stipes which taper upwards and bear at the tip a small head (Fig. 349). 

 This consists of a tangled felt of slender hyphae imbedded in a gel. The 

 hyphae radiate toward the outer wall, within which they form on branches, 

 a compact layer of cruciate basidia. The structure of the fructification is 

 similar to that in Phleogena, except the hyphal ends remain smooth and 

 do not coil, allowing the spores to be liberated between them. 



Fig. 348. — Tremellodon gelatinosum. Habit. (Natural size; after Moller, 1895.) 



Fig. 349. — Hyaloria Pilacre. Habit. (Natural size; after Moller, 1895.) 



Sirobasidiaceae. — As an appendix, we will discuss two interesting 

 forms whose position is still obscure. Sirobasidium Brefeldianum, on 

 rotting wood in Brazil, forms shining, later white, gelatinous fructifica- 

 tions up to 3 mm. in diameter. They consist of numerous, loosely tangled 

 hyphae radiating from a single point and imbedded in a transparent gel 

 (Fig. 350, 1). Clamps are abundant at the septa. The terminal cell 

 of the hyphae swell to elongate ovoids and divide by usually oblique 



