OF ARTS AND SCIENCES. lOQ 



oped trees they are often as deeply lobed as in alba. There are also at both sta- 

 tions trees with long-peduncled fruit as in bicolor, the leaves accompanying them 

 being of the less deeply-lobed sort. 



*2o Qiiercus jirinolcles, Willd. 



Abundant as far as several miles north of Manchester but not yet observed at 

 Concord. Tree-like plants are not rare. Some such in Hudson are 15 feet high 

 with stems 5 inches in diameter. Others in Manchester are 20 to 22 feet high with 

 stems 3 inches in diameter. These large forms appear to be old and little or no 

 fruit is found on them. So far as observed they do not show any approach to 

 Q. Muhlenbergii except in size. 



*2i Quercus coccinea, Wang. var. ambig-ua, Gray. 

 ( Quercus ambigua, Michx.) 



There are several trees at Manchester which are puzzling, from their combina- 

 tion of the characters of Q rubra and Q. coccinea. Since it is not known precisely 

 what Michaux meant by his Q. ambigua intermediate forms cannot with propriety 

 be given that name. The trees observed have the aspect and foliage of Q. rubra 

 while the fruit resembles that of Q. coccinea ; but the fruit varies on different 

 plants, being large on some and small on others, having the cups sometimes thick 

 and sometimes thin and the scales sometimes appressed and sometimes slightly 

 squarrose. 



The tendency among recent students of the genus is to consider such interme- 

 diate forms as forms only. One of our best authorities is of the opinion that the 

 group " Q. rubra, Q. coccinea, Q. tinctoria and Q. palustris constitutes a polymor- 

 phous species from which we separate extreme forms as a convenience in study." 



*22 Ulmus lulva, Michx. 



There are two good-sized trees at " Arcadia " by Piscataquog river. They are 

 to all appearance indigenous, but the proximity of old houses and abandoned 

 farms renders their spontaneousness at least questionable. Until more trees are 

 discovered it will not be entirely safe to claim the species as indigenous within 

 our area. 



*23 IMorus alba, L. 



A plantation of these trees in Pelham still survives to bear witness that our 

 ancestors were not entirely free from money-making schemes. It was made sixty 

 or seventy years ago during the " silkworm " craze. Tradition says that more 

 than one resident of the town sank his little fortune in Ja similar unprofitable 

 venture. The trees still bear fruit, though but scantily, for lack of cultivation. 



