346 THE PLANT PHYLA 



leathery or woody; hymenium lining 

 pits or pores. Boletus, Polyporus, 

 Fomes, Polystictus. 



Family 120. Hydnaceae. Prickly Fungi. From um- 

 brella-shaped to bracket-shaped, 

 fleshy to leathery or woody; hymen- 

 ium on warts or prickles. Hydnum, 

 Irpex. 



Family 121. Clavariaceae. Coral Fungi. Cylindrical 

 to clavate and fruticose, mostly 

 leathery; hymenium superficial. Pis- 

 tillaria, Clavaria. 



Family 122. Thelephoraceae. Leathery Fungi. Flat, 

 shell-shaped, capitate or branched, 

 mostly leathery; hymenium superfi- 

 cial. Thelephora, C o r t i c i u m, 

 Stereum. 



Order EXOBASIDIALES. Reduced and degraded plants 

 related to the preceding families; 

 basidia undivided. 



Family 123. Dacryomycetaceae; 124, Tulasnellaceae ; 

 125, Hypochnaceae; 126, Exobasid- 

 iaceae. 



Order TREMELLALES. Jelly Fungi. Reduced and degrad- 

 ed plants related to the preceding 

 families; basidia divided vertically. 



Family 127. Sirobasidiaceae. 



Family 128. Tremellaceae. Basidia collateral, spore 

 fruits open. Tremella, Exidia. 



Family 129. Hyaloriaceae. 



Order AURICULARIALES. Ear Fungi. Reduced and 

 degraded plants related to the preced- 

 ing families; basidia divided trans- 

 versely. 



Family 130. Auriculariaceae. Hymenium exposed, on 

 a gelatinous, foliose or vague spore 

 fruit. Auricularia. 



Family 131. Pilacraceae. 



Class 17. TELIOSPOREAE. Brand Fungi. Parasitic, much 

 reduced plants, producing erumpent 

 sori (but no definite spore fruits) 



