BOTANICAL SYMPOSIUM. 
53 
bridge at the Furnace, also at Schenck’s Ferry, a few miles up 
the river, probably its northern limit. A strange feature of this 
plant is that in all the twelve years some of us have had it under 
observation no seedlings have ever been seen from the Furnace 
plant. 
A short trip up Kevinski Glen was taken to show growing 
forms of Asplenium pinnatihdum, Viola villosa, Leptorchis lilii- 
folia and L. Loeselii. The latter two were in good flower. 
Phyllanthus Carolinensis was also abundant at Furnace along 
sandy banks of river, and on hillsides. 
Kevinski Glen also contains perhaps more plants of Magnolia 
tripe tala, the umbrella-tree, than any other locality in the valley. 
This is about its northern limit. 
Parietaria Pennsylvania and Ruhus Allegheniensis also appear 
here. 
Dr. Britton called attention to a hackberry which proved to be 
Celtis Georgiana Small and noted for the first time in this latitude. 
It is a low tree with irregular branches, very much the aspect 
of Celtis occidentalis but with small leaves, short petioled, ob¬ 
liquely ovate, short, acuminate and rough, fruit globose and short 
peduncled. Nearby on border of woods were the usual large, 
long acuminate leaved species noted before, C. canina and C. 
crassifolia. The contrasts were strikingly interesting. 
Large beds of Sednm ternatum covered the rocks in shaded 
portions even when pretty well taken up by the walking fern, 
Camptosorus rhizophyllus. 
In the oak woods at Furnace two species of cow wheat were 
found, Melampyrum line are Lam. and M. latifolium Muhl. 
On Baer’s Island opposite Furnace Hotel the following plants 
were prolific, Boltonia aster oides, Hibiscus militaris , Physostegia 
denticulata, Carex squarrosa and C. cristatella. A former plant 
of the region, a frequenter of slow moving water, Potamogeton 
pectinatus, the fennel-leaved pondweed, has disappeared with the 
general decay of canal life. 
Mrs. Britton reported from Otter Creek Byrum proligerum 
and Aphanorrhegma serratum. 
On Tuesday a rocky gorge below McCall’s Ferry station and 
