﻿BicKNELL : Ferns and flowering plants of Nantucket 563 



typical of the ordinary glabrous open ground form of the species, 

 and this is to be particularly noted for a very interesting reason : 

 all over Chappaquiddick Island grows the similar plant known as 

 var, scabrella Gray, not hitherto reported, I think, on our eastern 

 seaboard. Typical S. juncea was not found on Chappaquiddick 

 Island, nor did I meet with it anywhere on Martha's Vineyard. 



SOLIDAGO ALTISSIMA L. 



S. canadensis Auct. non L. 



Common, mainly along thickets near low grounds; disposed 

 to grow in close masses, and frequently forming a broad encircling 

 zone of yellow around the thickety borders of pond holes. Not 

 nearlyin flower August 1 6, 1906; freshly in bloom August 24, 1904. 



The Nantucket plant is all typical of S. altissima as now under- 

 stood, at least I did not succeed in finding on the island a smaller- 

 headed and less pubescent golden-rod of the same group that is 

 common in the neighborhood of New York and which, if it be the 

 true S. canadensis of Linnaeus, as would seem to be altogether 

 probable, judging from the description in Species Plantarum, is 

 manifestly not the same as the more northern plant now known 

 by that name and earlier described as var. glahrata Porter. 



SOLIDAGO NEMORALIS Ait. 



The Nantucket S. nemoralis is a hoary-canescent, mainly 

 depressed or prostrate form that has been characterized by 

 Professor Burgess as var. arenicola. It is an abundant species, 

 perhaps the most so of all the Nantucket golden-rods, growing 

 everywhere on open sandy levels, so thickly in many places as to 

 give its color conspicuously to extensive tracts that support no 

 tall herbage, but where the golden aster and the violet-flowered 

 lonactes aster also abound. Even in its more erect states it 

 displays a strikingly different aspect from the more usual forms of 

 S. nemoralis, but it appears to possess no essential distinctive 

 characters. On Nantucket I have seen no examples unmistak- 

 ably referable to typical 5. nemoraliSy but on Martha's Vineyard 

 the case is different. There the divergence from 5. nemoralis, 

 although often as great, is not at all as general, and many examples 

 are intermediate between the two forms. The case is analogous to 

 that of a number of other plants, that, on Nantucket, show a 



