298 FUNGUS-FLORA. 



LEUCOSPORAE. 



Spores typically white, although in some species there is a 

 more or less decided, but very faint tinge of yellow or pink. 

 The commonest spore form is elliptical, and with a smooth 

 epispore, although in the genera Lactarius, Eussula, and 

 Laccaria, the spores are subglobose and minutely warted or 

 echinulate. The present section contains more species than 

 all the other sections of the Agaricinae added together, and 

 as would be expected, presents the most complete sequence 

 in the differentiation of the sporophore. Lenzites, with its 

 corky pileus and gills, connects with Polyporeae through 

 Daedalea. The genera characterized by a tough, leathery 

 pileus that dries up and becomes rigid and persistent, as 

 Panus, Lentinus, &c., are but scantily represented in Britain, 

 or even in Europe, but on the other hand, are more numerous 

 in the tropics than the fleshy, putrescent genera, which 

 attain their maximum, both in development and numbers, 

 in the north temperate zone. 



ANALYSIS OF THE GENERA. 



I. SCHIZOPHYLLAE. 



Margin of gills longitudinally split or canaliculate. 



Schizophyllum. Margin of gills split, the two portions 

 revolute. 



Trogia. Gills resembling wrinkles or folds, edge groved. 

 (The single British species does not show the groove 

 along the margin of the gills.) 



II. HAPLOPHYLLAE. 



Margin of gills not longitudinally split nor grooved. 



A. TENACES. Coriaceous, corky, or .woody, persistent, 

 rigid when dry ; gills more or less decurrent. 



