THE AGARICACEAE OF THE PACIFIC 

 COAST— III 



William A. Murrill 

 (With Plate 77, Containing 2 Figures) 



The Species here treated have brown or black spores. Some 

 of them are celebrated for their edible qualities. No dangerously 

 poisonous species are known to belong to this group, although 

 many of them have not been tested. 



Spores brown. 



Annulus present. 



Lamellae free. i. Agaricus. 



Lamellae adnate. 2. Stropharia. 



Annulus absent ; veil appendiculate. 



Scattered or subcespitose, rarely densely cespitose ; 



surface hygrophanous, viscid, or squamulose. 3. Drosophila. 



Densely cespitose ; surface firm, dry, glabrous. 4. Hypholoma. 



Spores black or olivaceous. 5. Gomphidius. 



I. Agaricus (Dill.) L. Sp. PL 1171. 1753 



I. Agaricus campestris L. Sp. PI. 1173. 1753 



Seattle, Washington, Zeller icx); Golden Gate Park, California, 

 Murrill 11 14; La Honda, California, Murrill & Abrams 12 ji, 

 7^77; Stanford University, California, Nohara 2, Miss Patter- 

 son I/, Baker 130; California, Harper; Kadiak, Alaska, Trelease 

 504- 



2. Agaricus californicus Peck, Bull. Torrey Club 22 : 203. 



1895 



Pileus at first subconic, becoming convex, minutely silky or 

 fibrillose, whitish, tinged with purple or brownish-purple on the 

 disk; flesh whitish; lamellae close, free, pink becomin,8: purplish, 

 then blackish-brown ; stem rather long, solid or stuffed, equal or 

 tapering upward, distinctly and rather abruptly narrowed above 

 the entire, externally silky annulus, palhd or brownish ; spores 

 broadly ellipsoid, 5-6 X 4-5 f«- 



294 



