﻿568 Bicknell: Ferns and flowering plants of Nantucket 



be detected there. The absence of this common eastern species 

 is one of the noteworthy negative features of the Nantucket flora. 

 Its name does, indeed, appear among those of the common asters 

 of Mrs. Owen's catalogue, but since the abundant Aster multiflorus 

 is omitted it seems to be evident that the one was mistaken for 

 the other. It occurs on Martha's Vineyard where, however, it is 

 scarce and local. 

 * Aster tenuifolius L. 



Locally common in salt marshes along the harbor in the north- 

 eastern quarter of the island, growing in the black grass (Juncus 

 Gerardi) : Quaise, Swain's Neck, Squam, Pocomo. In early flower 

 August 1 6, 1906; in full flower September 21, 1907. Observed in 

 flower on Chappaquiddick Island as late as October 12, 191 1. 

 Aster subulatus Michx. 



One of the common plants of the salt marsh flora, mainly on 

 mud flats and along the borders of tide pools and ditches, blooming 

 during September. In full flower on Chappaquiddick Island as 

 late as October 9, 1910. 

 Ionactis linariifolius (L.) Greene. 



An abundant aster of the dry sandy plains and commons. 

 Its natural flowering season, when everywhere it reaches its 

 height of bloom, appears not to begin much before mid-September, 

 but precocious flowers are frequent in midsummer, and have 

 been observed as early as July 5 (1912). First flowers early in 

 September, 1904, September 12, 1907; generally still in full bloom 

 on Chappaquiddick Island as late as October 11, 1908. 



DOELLINGERIA HUMILIS (Willd.) Britton. 



Somewhat locally rather common in low grounds across the 

 northern side of the island, also about Siasconset. Minute flower 

 buds July II, 1912; not in bloom up to August 16, 1906; in full 

 flower during September. 



A striking bit of evidence of the far reach to Nantucket of a 

 more southern flora is the replacement there of the common 

 Doellingeria umbellata (Mill.) Nees, natural to the latitude, by this 

 closely related plant that is not known elsewhere north of southern 

 New Jersey. It matters little how close may be the relationship 



