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43 



eral teeth. vSpores linear, hyaline, sometimes gnttulate, faintly 

 nuiltiseptate, coiled 3-4 times: the thread 150-200 mic. in 

 length, 2.5-3 "i'<-'- '" thickness: the inner extremity acute, 

 the outer obtuse. (Fig. 5.) 



Growing on old wood and bark of Oak, Hickory, etc. The 

 habit of this plant is very peculiar ; it is exactly that of the 

 species of Graphium. The hyaline threads run constantly in 

 parallel bundles, but I have not been able to satisfy myself 

 that the black pointed threads which they u.sually inclo.se are 

 not the erect .stems of some old black mould. This is an 

 abundant species. 



c. Spores linear, the thread 4.5-6 iiiic. thick. 



Fig. 6. Helicoinyces fuscus. 



6. Helicomyces fuscus, B. & C. Effused, forming a thin, 

 brown, pubescent stratum. Hyphae brown, creeping, septate, 

 sending up long, simple, ascending branches which bear the 

 spores lateralh' on minute hyaline teeth. Spores linear, 

 brownish-hyaline, multiseptate {40-50), coiled usually 3-4 

 times ; the thread 350-450 mic. in length, 5-6 mic. thick in 

 the middle, tapering gradually, and 3-4 mic. thick at each of 

 the obtuse extremities. ( Fig. 6.) 



