November, 1907] Mycological Bulletin No. 83. 371 



Material received from Prof. W. A. Kellerman and Supt. M. E. 

 Hard, Central Ohio, prove to be nndescribed species of fnngi. The 

 diagnoses of one of these forms is given below: it is also illustrated 

 by a half-tone from photograph made liy the collector. 



N.vucoRiA PALUDOSELLA Atkinscn n. SI'. — Growing on living sphagnum, 

 other mosses and on rotten wood. Sphagnum moor. Buckeye Lake (Cran- 

 berry Island), Ohio, W. A. Kellerman 4464, Sept. 1905, and M. E. Hard 

 and W. A. Kellerman, Oct. 190G. (49H5, W. A. K.) 



Plants 6-8 cm. high; pileus 2J/4-3 cm. broad; stems 3-4 nnn. thick. 



Pileus viscid when moist, convex to expanded, in age somewhat de- 

 pressed, clay color, darker over ceriter, often with apprcssed clay ])rown 

 scales with a darker color. 



Gills raw umber to Mars brown (R), emarginatc. adnate, sometimes 

 with a decurrent tooth, easily becoming free. 



Cystidia on sides of gills none, edge of gills with large hyaline thin- 

 walled cells, subventricose, sometimes nearly cylindrical, abruptly narrowed 

 at each end with a slight sinus around the middle. 



Spores subovate to subelliptical, smooth. 7-9x4-.j u. fuscous ferruginous, 

 dull ochraccous under microscope. 



Stem same color as pileus but paler, cartilaginous, iloccose from loose 

 threads or in some cases abundant threads over the surface, becoming 

 hollow, base bulbous, the extreme base covered with whitish mycelium. 



Veil rather thick, floccose, disappearing leaving remnants on stem and 

 margin of pileus when fresh. 



DESCRITION AND ILLUSTRATION OF PECK'S PSATHYRELLA 



HIRTA. 



W. A. KELLERMAN. 



An interesting little Agaric appeared recently in the soil of a bed in 

 the Ohio State University Conservatory. It confined itself to a very small 

 area, the plants usually standing a short distance apart. When young it 

 was very conspicuous by reason of the rather large tufts of white hairs 

 that completely covered the small pileus. It takes on a deep dull orange 

 color (fourth shade of orange. Prang's system) when the cap expands, 

 and then the hairs mostly have disappeared. When quite mature none or 

 only traces of the hairs remain — so easily do they vanish especially liy 

 application of water, (outside the greenhouse the rain of course would 

 have the same effect.) 



Specimens of the i)hint (as No. 491.')) were sent to Professor Peck 

 who identified it as a species which he described in the ."jOth .Annual Report 

 of the New York State Museum (ls9S), p. 107. 1 quote his description 

 in full : 



"Psathyrella hirta ii. s/^. — Pileus thin, hemispherical or convexs, adorned 

 when young with erect or spreading tufts of white, easily deterible and 

 quickly evanescent hairs, hygrophanous, brown or reddish-lirown .Mid 

 slightly striatulatc when moist, pale grayish-brown or' dingy whitish when 

 dry, flesh suI)concolorous ; lamellae broad; moderately close, adnate and 

 often furnished with a decurrent tooth, at first pallid, becoming blackish- 

 brown or black ; stem Hexuose. scpiamose, hollow, shining, white ; spores 

 elliptical, black, .0005 to .00055 in. long. .00025 to .0003 broad. 



"Subcaespitose; pileus 4 to 6 lines broad; stem 1 to 2 in. long to 1 to 

 1.5 lines thick. 



"Dung or dungv ground in shaded places. Adirondack mountains. 

 July. 



"The species has some points of similarity to Psatliyra gossyt>ina and 

 P. pciiiiata, but its adnate lamellae and black spores distinguish it from 



