OF ARTS AND SCIENCES- 55 



1 7 . Betula nigra L . 



Abundant in Pelham along Beaver Brook for at least four 

 miles north of the Massachusetts line. Undoubtedly members 

 of a westerly extension into this corner of New Hampshire of 

 the remarkable station discovered many years ago by Mr. 

 Geo. B. Kmerson at Spickett Falls in Methuen, Mass., (which 

 adjoins Pelham on the southeast), and described by him in his 

 " TREES AND SHRUBS OF MASSACHUSETTS," (q. v.). 



The number of individual plants must mount into the 

 thousands. The trees may be seen in abundance at either of 

 the three old stone bridges which span Beaver Brook near Pel- 

 ham Center. Near the north bridge are particularly fine large 

 trees and also handsome groves of them. The species should 

 be looked for in the southern parts of Salem and Hudson. 



18. Quercus prinoides Willd. 



Abundant as far as several miles north of Manchester, but 

 not yet observed at Concord. Arborescent plants are not rare. 

 Some in Hudson measured 4 m. in height, with stems 1.25 dm. 

 in diameter. Others in Manchester were 5 m. in height with 

 stems 8 cm. in diameter. These large forms appeared to be old, 

 and they bore little or no fruit. So far as observed they did not 

 show any approach to Q. Muhlenbergii Kngelm., except in size. 



19. Quercus Prinus L. 



Two stations of this species have been examined, one in 

 Manchester, at Rock Rimmon, the other in Auburn, six miles 

 distant. The leaves vary greatly in outline, those en the finest, 

 best developed trees being often as nearly entire as those of 

 typical bicolor, or of the Chestnut, while on stunted, ill developed 

 trees they are often as deeply lobed as in alba. There are also 

 at both stations trees with the fruit long-peduncled as in bicolor, 

 the leaves accompanying them being always of the less deeply 

 lobed form. 



