106 



The present collection was made during the past summer in 

 Windham County, Vermont, immediately north of the region ex- 

 plored by Frost, in a belt reaching from Newfane east to Putney 

 Mountain and west to Stratton Mountain. This part of the 

 county varies from i8o to 600 meters in elevation, and is well 

 wooded with balsam, spruce, hemlock, beeches, maples, and 

 birches. In all, thirty-three species of Lactarii were found, of 

 which twenty-two are not included in Frost's list. Five of these 

 are new species, and two others are reported from the United 

 States for the first time. Ten additional species are given in 

 Frost's list, making for the state forty-three species, a greater 

 number than has been reported from any other state with the 

 exception of New York. Frost enumerated several new species, 

 but he failed to publish any description of them, and thus unfor- 

 tunately they cannot be taken into account. 



Discussion followed. 



" The distribution of Tree-Ferns of the Genus CyatJica in the 

 West Indies," by L. M. Underwood : 



The Genus CyathcawdiS originally published by Sir J. F. Smith 

 in 1793. CyatJica aj'borca, the common lowland species of the 

 West Indies, is the type of this genus. Cyathea is the type of 

 the family Cyatheaceae containing most of the tree-ferns. There 

 are about eleven other genera, only one, A/sophila, as large as 

 Cyathea, which has some two hundred species about equally 

 divided between the tropics of the Old W^orld and the New. 

 The 104 American species are divided about equally between 

 North and South America. Some of the distributional features 

 are as follows : 



1. No species are common to the Old World and the New. 

 This applies equally to all tree-ferns. 



2. With two or three exceptions, no species are common to 

 North and South America. 



3. As a general rule each species is local in its distribution. 



4. Cyathea arborca, a lowland species, is the only one common 

 to the Lesser Antilles and all the Greater Antilles. 



5. Cyathea i)isig)iis is common to Cuba and Jamaica (1200 

 meters). 



