THE FUNGI WHICH CAUSE PLANT DISEASE 443 



Lamellae not fleshy or waxy- 

 Substance of the pileus of two 

 kinds of hyphse, one thick, 

 tubular and in bundles, the 

 other thin, single and fre- 

 quently lactiferous V. Lactarieae. 



Substance of the pileus of only one 



kind of hyphse 



Sporophore at maturity leathery 



or corky, persistent, rarely 



fleshy 



Lamellae at maturity split 



lengthwise VI. Schizophylleae, p. 444. 



Lamellae at maturity not 



splitting VII. Merasmieae, p. 445. 



Sporophore at maturity fleshy, 



finally putrescent VIII. Agaricese, p. 448. 



Cantharelleae (p. 442) 



This tribe is characterized by its low ridge or fold-like lamellae. 

 The hymenial characters indicate an approach to the Thelephora- 

 ceae. 



Key to Genera of Cantharellese 



Hymenium on the upper side of the pileus. 1. Rimbachia. 

 Hymenium on the under side of the pileus. 

 Hjonenium with thin veins 



Veins anastomosing 2. Campanella. 



Veins not anastomosing 3. Arrhenia. 



Hymenium with thick folds 

 Substance of the pileus leathery, 



tough 4. Trogia, p. 444. 



Substance of the pileus thin, soft- 

 leathery 

 Sporophore sessile, at first saucer- 

 shaped 5. Leptopus. 



Sporophore laterally stalked, fan- 

 shaped 6. Leptoglossum. 



Substance of the pileus fleshy 7. Cantharellus. 



