20 BiCKNELL : Ferns and flowering plants of Nantucket 



were developed although its companion species was covered with 



them. 



In the dense thicket in Shawkemo, is a group of several trees 

 certainly fifteen feet high, the largest twenty-eight inches in cir- 

 cumference a foot above the base ; their bark is close and white 

 like that of a beech, although a little broken and darker low on the 



\Hicoria ovata (Mill.) Britton] 



larger trunks. 



Note. 

 is mentioned by Mrs. Uwen as having been tound on Loskaty by 

 Mn W. L. Foster. The tree would be rather unexpected on Nan- 



i 



tucket and a more detailed record seems to be needed. A few 

 young trees, one about eight feet high, grow among the Miacomet 

 pines, where they are certainly not native, and their presence there 

 affords no better reason for admitting the species into the Nan- 

 tucket flora than for accepting the chestnut as a Nantucket tree on 

 the strength of a single small sapling found growing like the 

 hickories anions^ the pine trees. 



BETULACEAE 



Carpinus caroliniana Walt. 



+ 



Admitted in Mrs, Owens' list ; I did not meet with it. 



CORYLUS AMERICANA Walt. 



Frequent or common in dry thickets from the east side of the 

 lower harbor to Shawkemo, Quaise, Polpis, and Squam. As a 

 rule it does not fruit freely but sometimes, as on Rattlesnake 

 Bank, it is very prolific. 



CORYLUS KOSTRATA Ait. 



Much more common and generally distributed than the fore- 

 going, entering freely into the composition of the woody growth 

 over the moorland and on dry exposed hillsides, and fruiting 

 prolifically often when only six to twelve inches high. In low 



thickets in Polpis it reached a height of several feet and was 

 loaded with fruit, some of the branchlets only five inches long 

 bearing as many as ten well-developed nuts. In these the body of 

 the fruit was small, IO-13 mm. long, and densely bristly -pubescent, 

 the beak var>'ing from straight to much curved and from 10 mm. 

 to 25 mm. in length. On some of these low fruiting- shrubs the 



