FUNGI OF IMPORTANCE IN THE DECAY OF TIMBERS. 23* 



Trametes serialis: 



Secondary mycelium — 

 Submerged. 



Colorless ; 3.3 to 6.3 /* ; septa relatively few, far apart in some 

 hypha?, close together in others ; clamps very few and small ; branch- 

 ing more frequent than in aerial vegetative mycelium, may begin as 

 close to growing tip as 150 /x, but usually farther back; contents of 

 young hyphse homogeneous, with occasional angular crystals ; chlamy- 

 dospores fairly common, varying more or less with age of culture, 

 very abundant in old cultures ; colorless, ellipsoid, fairly thick walled, 

 4.5 to 10X7 to 21 fi, occurring intercalarily. 

 Aerial. 



Vegetative mycelium : Colorless ; 1.5 to 3.6 ix ; septa and clamps 

 fewer than in fruiting mycelium, but fairly abundant ; branching 

 irregular, not abundant, not necessarily at right angles, with forking 

 common ; hyphse straight for the most part, contents homogeneous ; 

 anastomosing occasional ; chlamydospores few, similar to those on 

 submerged mycelium. 

 Tertiary mycelium (aerial) — 



Fruiting mycelium : Colorless ; 4 to 6.6 /t ; of unequal thickness, much 



of it with contents gone and only walls left ; abundant protuberances, 



round or bluntly pointed; branching common, usually at clamps; septa 



and clamps abundant ; anastomosing common ; chlamydospores as above. 



Fames roseus: 



Secondary mycelium — 

 Submerged. 



Colorless ; 0.8 to 3.6 /x, occasionally 4.6 fi, with much small my- 

 celium ; septa and branching not abundant ; clamps not observed ; 

 branching begins near tip of young growing hyphse ; no secondary 

 spores observed. 

 Aerial. 



Colorless; smallest hyphse 0.8 to 1 fi, more commonly 2 to 3.1 /*, 

 occasionally 3.8 to 4.7 fi ; septa not abundant ; branching not abun- 

 dant ; may or may not be at septa ; clamps few ; anastomosing of 

 smaller hyphse occasional ; no secondary spores observed. 

 Tertiary mycelium (aerial) — 



Colorless, pinkish in mass ; 2 to 3 n ; no branches or clamps ; stiff, 

 hairlike. 

 Lentinu8 IcjAfleus: 



Secondary mycelium- 

 Submerged. 



Colorless ; 3.5 to 4 p ; septa abundant, hyphse constricted at 9epta ; 

 branching may begin near tip of growing hyphse, not necessarily at 

 septa or clamps; clamps fairly abundant; anastomosing occasional at 

 clamps; chlamydospores colorless, tnlck-walled, usually ellipsoid, oc- 

 curring intercalarily or terminally on short lateral branches; 8 to 

 14 X 10 to 20 pt. 

 Aerial. 



Colorless; 2 to 3 n ; branching common, also septa; clamps few; 

 chlamydospores colorless, 8 to 14 X 10 to 29 m, usually ellipsoid, oc- 

 casionally ovoid or ellipsoid-oblong, usually terminal, bul occasionally 

 Intercalary, commonly empty ( commonly showing secondary walls due 

 to coni raction of contents. 



