Popttlus Xh.ka. L. Lombardy Poplar. 



"Hudson: Hoboken, on the road to Weehawk." (Torrey 

 Herb.) "Warren: Island in the Delaware, above Phillips- 

 burg. Salem: Banks of the Delaware. Adventive from 

 Europe.' 7 (Brit ton.) 



''The Lombardy Poplar, a native of Asia, once so common 

 around old dwellings, is rapidly losing its hold, owing, it is 

 • claimed, to the fact that only trees of one sex were introduced 

 into this country, the male and female flowers being on 

 separate trees. This is an interesting example of the effects 

 of long-continued asexual reproduction." (Geol. Rpt., '94, 

 Gifford, 255.) 



*Scdix nigra, Marsh. Black Willow. 



"Along streams and ponds. Passaic : Greenwood lake, 

 and common in the middle and southern counties." (Britton.) 



"Willows are not plentiful in South Jersey, although there 

 is much land adapted to their cultivation. They are mainly 

 disseminated by the wind. The branches which are snapped 

 off by winds and rushing water easily take root in swampy 

 places." (Geol. Rpt., '94, Gifford, 260.) 



'"The wood of the willow is more valuable than is usually 

 supposed. It holds a nail tenaciously, and although soft, is 



Fig. 9. 

 Salix nigra, Marsh. Black Willow. Prom Sargent's " Trees of North America." 



firm. * * * The wood of the Black Willow has been 

 used to considerable extent by shipbuilders in South Jersey." 

 (Geol. Rpt., '94, Gifford, 283.) 



