48 



BROOKLYN BOTANIC GARDEN MEMOIRS 



Anaphalis margaritacea 

 Chrysopsis falcata 

 Crocanthemum majus 

 Moehringia lateriflora 

 Myosotis virginica 

 In certain places at the bottom of this slope there are large, practically 

 exclusive, growths of Comptonia peregrina. Over a considerable part of 



Figure i6. Open grown specimen of black oak {Qiiercus velutina) at the edge of 

 Hither Woods, three feet in diameter at breast height. (Photograph by Harrington Moore.) 



this area there is an impenetrable tangle of Riibus procumbens scarcely over 

 three inches tall and a conspicuous inhabitant of the patches of bush over 

 the rest of the Downs. 



Among the miscellaneous growth, made up of elements from the Downs 

 and the woods, and both actively attempting to appropriate the ground, 

 there is evidence that the pioneers from the woods are winning. The 

 most convincing features of this aggressiveness of the woods' plants are the 

 numerous oaks which push out from the woods and find at least sufficient 

 congeniality to persist in this tension area. Everywhere where the con- 

 ditions produced by pioneer plants from the woods have made the escape 

 of these oaks possible, they are sure to be found. This aggressive expansion 

 must end in a considerable curtailment of the Downs area ultimately. 



