10 



KEY TO APHYLLOPHORALES 



Spores purple 



((Boletus p.p.) 



Spores blackish, or fuscous. Pileus) . ,. 7 

 vn Q ^ TTrUk ;w,^o+ Q oUc, f Strobilomyccs . 



Boletinus. 



covered with imbricate scales 

 Spores ochraceous, ferruginous, or oliva- 

 ceous. 



Tubes short, alveolar, decurrent 

 Tubes very short, gyroso-plicate 

 Tubes long Boletus. 



APHYLLOPHORALES. 



I. Receptacle pileate, stipitate, sessile, orl PO ROHYDNINEAE. 

 resupinate; hymenium inferior J 



II. Receptacle erect, dendroid, coralloid,1 



simple, or branched, never pileate; hy-V CLAVARIINEAE. 

 menium more or less amphigenous 



I. POROHYDNINEAE. 



1. Hymenium lining tubes coherent 

 throughout their length, forming a 

 layer distinct from the substance of 



the pileus, sometimes becoming torn 



POLYPORACEAE. 



into teeth, or gill-like plates, and sepa- 

 rated by dissepiments sterile on the 

 edge 



2. Hymenium lining tubes, or covering"! 

 gills, or teeth, homogeneous with the' 

 substance of the pileus, not forming a 

 distinct layer, sterile on the edge 



3. Hymenium spread over veins, anasto-1 



mosing pores, or quite smooth; edge of j- MERULIACEAE. 

 veins or pores fertile 



4. Hymenium inferior, lining free and! FlgTULINACEAE . 

 separate tubes J 



5. Hymenium spread over the surface of 

 spines, granules, warts, or other pro- 



tuberances, or quite smooth, inter- 

 vening spaces fertile. Receptacle fleshy, 

 coriaceous, waxy, crustaceous, or floe- 

 cose, rarely none 



HYDNACEAE. 



