128 Natural History Bulletin. 



Peridium thick, ashy or amber, generally with a roseate flush, 

 smooth or irregularly obscurely reticulate. Spore-mass bluish- 

 gray; capillitium concolorous. Spores, .0054-.006. 



Not common. Found on all sorts of stems and stumps in 

 woods. Generally solitary, easily distinguished from the pre- 

 ceding by its size, shape and color. Specimens sometimes 

 attain the size of a walnut (2 centimeters in diameter), more 

 commonly of a hazel-nut. 



C. TrichecB. 



TRICHIA, HaUer. 



Sporangia distinct, sessile or stipitate. Tubes of the capil- 

 litium free, simple or rarely branching, with acuminate ends, 

 the walls adorned with spiral threads or bands. 



21. Trichia fallax, Per soon. Plate IV, Fig 2, 2a and 2h. 



Sporangia single, gregarious, top - shaped or piriform, 

 stalked; peridium olive-brown, opening irregularly, shining. 

 Stipe hollow, filled with spore-like cells. Capillitium and 

 spore-mass dull yellow, the elaters often branched, with long 

 acuminate ends, and adorned with three or four smooth thin 

 spiral bands. Spores yellow, minutely verruculose, .010-.012. 



A very beautiful, well defined species; easily recognized at 

 sight by its distinct pear-shaped, stalked and shining sporan- 

 gia. Under the lenses the elaters with their long tapering 

 pointed ends are sufficiently definitive. The stipe is fuscous, 

 almost or quite black. The plasmodium is described as flesh- 

 colored, the young peridia, scarlet. The spores are described 

 as miniUcly rough by all the authorities. Under lenses of low 

 magnifying power this is apparently true; but under a fine 

 lens, Leitz's one-sixteenth oil-immersion, for instance, the 

 spore shows a delicate reticulation over its whole surface. 

 This is not the effect of optical illusion, as might perhaps be 

 surmised, following analagous experience in the microscopical 

 examinations of Diatoms, for example. The net-work is 



