30 Cincinnati Society of Natural History. 



Growing on old wood. vSporangia with the stipe 2-4 mm. 

 in height, the sporangium .6-.8 mm. in diameter, the stipe 

 usually longer than the sporangium. The color quite variable, 

 mostly dull red-browai or blackish-brown, more rarely yellow 

 or coffee-brown, usually opaque, rarely shining. 



2. Trichi.\ fallax, Pers. Sporangium obovoid to pyri- 

 form or turbinate, rarely clavate, stipitate ; the wall thin, 

 smooth and .shining, colored as the spores and capillitium. 

 Stipe more or less elongated, simple, erect, brownish below, 

 filled with roundish vesicles. Mass of capillitium and spores 

 yellowish, ochraceous or olivaceous ; elaters simple or some- 

 times with several branches, 4-6 mic. thick in the middle, 

 tapering gradually to each extremity, ending in smooth taper- 

 ing points, 20-40 mic. in length ; spirals, three, perfectly 

 smooth. Spores globose, minutely warted, 10-12 mic. in 

 diameter. See Plate I, Fig. 22. 



(rrowing on old wood. Sporangium with the stipe 2-4 

 mm. in height, sporangium .6-.8 mm. in diameter, the stipe 

 u.sually longer than the sporangium, li nder high magnifying 

 power the spores are seen to be minutely reticulated. 



b. Elaters cy/indrk, ending in a snioot/i tapering point. 



3. Trichia suhfusca, Rex. Sporangium globo.se, rarely 

 globose-turbinate, stipitate; the wall thickish, dull tawny- 

 brown above, shading to dark brown at the base. Stipe 

 simple, erect, brown or blackish in color. Mass of capillitium 

 and spores bright yellow; elaters simple, rarely branched, 

 cylindric, 3.5-4 mic. in thickness, ending in smooth tajiering 

 points, 10-12 mic. in length; spirals, four in number, perfectly 

 smooth. Spores globose, minutely warted, 11. 5-12. 5 mic. in 

 diameter. 



On old wood and bark. Adirondack Mountains, New York. 

 Dr. George A. Rex. Sporangium .5-.S mm. in diameter, the 

 stipe equal in height to the diameter of the sporangium. 



4. Tkiciiia i;ki;cta, Rex. Sporangiumglobo.setoglobo.se- 

 turbinate, stipitate; the wall of both sporangium and stijK- 

 with a rough outer layer of brown scales and granules, which, 

 on the upper surface of the sporangium, soon breaks \\\s into 



