Vol. 46 No. 11 
BULLETIN 
TORREY BOTANICAL CLUB 
NOVEMBER, I919 

The ferns and flowering plants of Nantucket-—XX 
EUGENE P. BICKNELL 
CONCLUSION 
The plants of Nantucket enumerated in the catalogue, brought 
to a close with these pages, number 1,136, including thirty-three 
natural hybrids. Other probable hybrids and some sixty varieties, 
mainly such as have received names, have been referred to in 
the text. Some of these plants that are listed under binomial 
names are without general botanical consent to be taken as com- 
pleted species. These, however, are all plants of marked attributes 
and, however opinions may differ as to the precise status of this 
one or that, in each case a binomial name has been allowed its 
sufficient claim unmistakably to denote the plant referred to. 
This dissembles nothing and has seemed to avoid whatever of 
factitious precision may inhere in a needlessly composite name. 
On the other hand forms that pass current under varietal names 
that seem unduly to honor certain of those variations which, in 
undefinable number, are common to plants in general, have had 
only their passing word. 
Omitting the hybrids the number of plants formally listed is 
I,103.*. Of these 746 are native to the island and 362 are in- 
troduced. : 
* This number includes a few mere varieties admitted in the earlier parts of 
this series, and allows for two species that should be omitted and four here to be 
_ added. The eliminations are Panicum linearifolium (see Supplementory Notes, 
antea) and Bartonia iodandra. The Nantucket plant discussed under this latter 
name should be referred to B. paniculata—a contracted form in which the anthers 
[The BULLETIN for October (46: 389-422) was issued November 5, 1919.] 
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