ow 



164 Journal of the Mitchell Society [March 



Key to the Genera 



Plants with a distinct cap and more or less central 

 stem; texture fleshy, brittle; growing on the 

 ground Hydnum (p. 166) 



Plants without a distinct cap and stem; soft, fleshy; 

 growing on wood; tuberculate or intricately 

 branched Manina (p. 176) 



Plants with a distinct cap which is laterally sessile or 

 stalked; texture tough, fibrous and dry; growing 

 on wood Steccherinum (p. 178) 



Plants with a stalk and cap; texture spongy or tough 

 (often spongy above and hard below) ; growing on 

 the ground. 



Spores warted and angular Hyclnellum (p. 181) 



Spores echinulate or papillate Phelloclon (p. 192) 



Plants entirely resupinate, the teeth simple or 

 branched, usually flattened; color rusty-cinnamon; 

 texture firm and tough Hydnochaete (p. 197) 



Plant toughish-gelatinous, watery, translucent, broad- 

 ened and bent over at the top, the very small teeth 

 hanging from the under side Tremellodon* 



In addition to the keys for species under each genus we give beL 

 a general key for all the species that are here treated : 



Key to all the Species Here STUDiEof 



Growing on wood. 



Without a distinct cap, plants large, laterally at- 

 tached. 



Solid and nearly simple, covered nearly all over 



with large spines Manina cordifonnis (1) 



Repeatedly and delicately branched, covered all 



over with short spines Manina flagellum (2) 



With a distinct cap which is attached at the side 

 and strongly tomentose; no stem. 



Color light grayish-brown; flesh dry, ^hrous .. .Steccherinum Rhois (2) 

 Color light-buff or rosy-buff at maturity; flesh 



juicy Steccherinum 



pulcherrimum ( 1 ) 

 With a distinct cap, usually with a stem; smooth or 



very minutely tomentose Steccherinum adus- 



tum (3) 

 Growing on the ground. 



Having a distinct, strong odor, at least in drying, 

 which is usually of fenugreek, or slippery elm 

 bark, or a more fetid pig-pen odor. 



Very small, up to 1.5 cm. broad Phellodon Ellisi- 



anus (5) 

 Over 1.5 cm. broad. 



Taste peppery or sour, odor of fenugreek. 



Taste peppery Hydnellum diabolus (1) 



Taste sour Phellodon Cokeri (4) 



Not peppery or sour, spores white, odor teiiA .Phellodon amicus (1) 



*This is not one of the Hydnaceae, but is keyed here because of its pendant, awl-like teeth. 

 It will be found under the Tremellaceae. 



tThe numbers refer to the species number under the genus indicated. 



