No. 3.] HYMENIALES OF CONNECTICUT. 33 



at one side of the center, at one edge of the pileus, or in some 

 species it is lacking ; the pileus being then attached directly to 

 the substratum. 



When the stem is present, the gills usually extend down it 

 for a' greater or less distance. 



This group is usually found growing on wood either dead 

 or alive. It contains many edible species. The well known 

 oyster pleurotus and elm pleurotus are among the most desir- 

 able of these species. As in Collybia, these mushrooms are 

 very frequently infested with larva;. 



Pleurotus lignatilis Fr. (woody). 



Mansfield, July (81). 

 Pleurotus ostreatus Jacq. (oyster-like). 



East Hartford, Hanmer; Mansfield, Aug. (217). Edi- 

 ble (Pk.). Plate XII. 

 Pleurotus petaloides Bull, (like a petal of a flower). 



Mansfield, July (158). Edible (Cooke). 

 Pleurotus sapidus Kalchb. (savory). 



South Windsor, Hanmer; Mansfield, Nov. (366). 

 Edible (Pk.). 

 Pleurotus serotinus Schr. (late). 



South Windsor, Ha inner. 

 Pleurotus ulmarius Bull, (pertaining to the elm). 



East Hartford, Hanmer. Edible (Atk.). 



NYCTALIS Fr. 



vhi, night ; from inhabiting dark places. 



This is a small genus of mushrooms, but interesting from 

 the fact that the only American species is found living upon 

 decaying mushrooms of other genera. Some of the species of 

 Russnla seem the most frequent host-plant. The cap is white 

 or grayish white, fleshy ; stem short ; gills blunt, distinct, thick, 

 and juicy. 



Nyctalis asterophora Fr. (star-bearing; from the star- 

 shaped bodies in the dust on the pileus). 



South Windsor, Hanmer ; Goshen, Underwood. 



