50 



Lythrum Salicaria is established in the swampy spots back 

 of Tomkins Cove and Stony Point in dense colonies. 



The gorge of Cedar Pond Brook, from the site of the former 

 Flora's Falls, now covered by the dam of the reservoir of the 

 Haverstraw Water Company, down under the high bridge on 

 State Highway 9-W to the salt marshes between Stony Point 

 and Grassy Point is very interesting, even when covered with 

 snow and ice, which obscured the lichens and liverworts we 

 hoped to find. We shall make another trip there in summer when 

 conditions are better for closer studies. Flora's Falls was the 

 location of a rare species of the gelatinous lichen Collema, re- 

 ported by Austin to Tuckerman, sixty years ago, and named C. 

 myriococcum in Tuckerman 's book. As this is a lime loving 

 species, we thought it might be found on the limestone pebbles 

 in the limestone-sandstone conglomerate, a border formation of 

 the Triassic red sandstones which have their northern exten- 

 sion here, and which is seen in the vertical walls of the gorge 

 just below the dam. But the icy conditions deferred closer ex- 

 amination until summer. The mile or so of gorge, down to the 

 salt meadows, would repay intensive study in open conditions. 



South of the Stony Point railroad station, the Great Horse- 

 tail, Equisetum hyemale, is found as a weed among the ties on a 

 siding. Equisetum arvense often grows in such situations, but 

 this is the first time I have seen E. hyemale growing in this man- 

 ner. It evidently spread from a larger colony on the banks of 

 the dissected river terrace, on the north side of Cedar Pond 

 Brook, where it becomes a tidal estuary near the railroad bridge 

 west of Grassy Point. 



Color changes in lichens, on application of KOH, were seen 

 on Xanthoria parietina, growing on an old elm, turning purple; 

 and Cladonia subcariosa, in an old field, turning yellow and 

 finally scarlet. 



Raymond H. Torre y 



The Field Trip of February 17 to the Palisades 



On Saturday morning, February 17, a party of five walked 

 along the Palisades from the Alpine landing to Forest View. 

 The purpose of the trip was advertised as a study of trees in the 

 winter condition and attention was given to the comparison of 

 the buds of related species of Oak, of Maples, and of the two 



