The Acjaricaccac of Ohio. 519 



F/ Whole plant white or whitish ; stipe 

 usually less than 5 cm. long. S. 402; 

 St. 2:79; Mc. 153; M. B. 116:55; H. 

 219 H. virgincns (Bull.) Fr. 



F.- Pileus tawny, buff, cinereous ; occasion- 

 ally varying to whitish or with tinge 

 of red ; stipe usually more than 5 cm. 

 long. S. 401; H. 205,206; St. 279; 

 Mc. 152; A. 113; M. B. 116:56. 



H. pratensis (Pers.) Fr. 



LACTARIA PERS. 



A.^ Latex colored from the first. 



B.^ Latex and plant indigo-blue. S. 438; N. A. F. 187; H. 

 167; Mc. 171; A. 125; P. R. 38:115. 



L. indigo (Schw.) Fr. 



B.- Latex and plant saffron-red or orange. S. 438; N. A. F. 

 186; H. 179; Mc. 170; A. 123; M. 184; P. R. 38: 116. 



L. dcliciosus (L.) Fr. 

 A.^ Latex white or whitish at first. 

 B.^ Latex very acrid. 



C} Pileus dry or only moist ; not viscid. 



D.^ Latex becoming golden-yellow ; pileus zonate. S. 

 433; H. 181; P. R. 38:117; N. A. F. 188: 



A. 122 ; St. 2 : loi L. chrysorhca Fr. 



D.- Latex unchanging; pileus azonate except in L. 

 rusticana. 

 E.^ Pileus white, whitish or yellowish. 



F.^ Pileus tomentose; lamellae broad, distant. 



S. 437; N. A. F. 177; H. i8r; Mc. 



169 ; M. 183 ; St. 2 : 102 ; P. R. 38 : 124. 



L. vellerea Fr. 



F.- Pileus glabrous ; lamellae close, narrow. 



G.^ Flesh thick; lamellae usually decur- 



rent, not straw colored, 2 mm. 



broad; stipe solid. S. 436: N. A.. 



