for 



Bicknell : Ferns and flowering plants of Nantucket 51 



only in the late summer and autumn, and there can be not the 

 least doubt that many additional plants, especially among the 

 sedges and grasses, would reward careful exploration in the spring 

 and early summer. 



So localized are many of the plants which grow on the island 

 that it is not at all a matter of surprise that they were missed by 

 the earlier explorers. I am well satisfied to believe that many 

 additional species are to be found at the very season of my own 

 explorations. These were carried out in much detail and it is there- 



e interesting to record that of the species authentically admitted 

 by Mrs. Owen over seventy were not encountered by me. Some 

 of these are without doubt now extinct on the island and others 

 were introduced plants which, it appears, had no permanent foot- 

 hold. On the other hand, a number of those here added, although 

 now well established, are doubtless newcomers within recent years, 

 while still others are clearly only adventive and may or may not 

 take an established place in the flora. 



A particular interest always attaches to the studv of an insular 



At 



ora - Its strictly circumscribed limits make possible 

 Ppioach to completeness in achieving a knowledge of its entire 

 ^position and of apprehending such changes as may be brought 

 * out in the course of time. In the interest of comparison in the 

 ure lt would seem well to express with particularity the status 

 he present day of each of the species known to occur on the 

 *land of Nantucket. 



is to be understood that all references to existing records 

 o Mrs. Owen's catalogue unless otherwise expressly stated, 

 itions to this earlier catalogue are denoted by an asterisk. 



some 



fut 



OPHIOGLOSSACEAE 



p HlOGLOSSUM VULGATUM L. 



order of Tom Never's swamp near the 'Sconset road, Sept. I 5 , 



J 7 a colony of thirty or more plants almost hidden in the 



bounding vegetation. The plants showed much variation — 



m 1.6 to 3.4 dm. in height, the leaves 2. 5-6 cm. long, 7-27 mm. 



ba ii lanceolate to elliptic-oblong and ovate-oblong, and with 9-13 



Vei ns. Some of the smaller plants are suggestive of Mrs. 



