1912] Bartlett,— Flora of the New Jersey Pine Barrens. 95 
(e. g. Lycopodium carolinianum) and others which are high Alleghanian 
(e.g. Leiophyllum buxifolium). On the other hand Rhododendron 
maximum, an Alleghanian type, is listed as boreal, which it certainly 
isnot! The detailed statements of species distribution in the author's 
own area, however, leave little to be desired. The data are based 
upon many years of active field work by Mr. Stone and his associates, 
Messrs. Bayard Long and S. S. Van Pelt, and on the critical study of 
more than 33,000 herbarium specimens. It appears from the frequent 
acknowledgment of his aid that Mr. Long also had a considerable 
share in the determinative work. 
As in several late local floras, the systematic catalogue of the species 
is interpolated with keys to the families, genera, and species. The 
keys include introduced weeds, which, however, are not further 
mentioned except in brief foot-notes. The native plants are not 
described, but there are free notes on distribution, characters, local 
history, etc., which transform what would otherwise be a bare cata- 
logue into an account which can be read for pleasure. The notes 
on Schizaea and Corema may be mentioned as among the more 
interesting ones. 
It is not always clear why the author disposes as he does of some of 
the minor variations of species. For example, nothing would have 
thrown more light on the geographic affinities of the pine barren flora 
than the recognition of Juncus effusus var. conglomeratus, and further 
notes on its distribution. Again, should we not be told why the 
author fails to recognize the coastal plain beech as distinct from 
the Alleghanian form? In Maryland and Virginia, the varieties of 
Peltandra proposed by Mr. Tidestrom (Ruopora XIII, p. 47, 1910) 
are very distinct, although known from few stations. If Mr. Stone 
has found them frequently enough to feel confident in regarding them 
as individual variations, a more detailed discussion of them would be 
welcome. Other cases might be mentioned in which decisions be- 
tween conflicting views regarding the taxonomie status of forms 
seem to have been made arbitrarily. This fault, however, is more 
than overbalanced by the care with which the record of every species 
admitted to the flora has been put on a firm basis. "The author has 
spared no pains in searching out old indefinite records, which he has 
either substantiated or discredited. Another feature of the book 
which deserves high commendation is the accurate statement, for 
each species, of the date of flowering, ripening of the fruit, or matura- 
tion of the spores, as the case required. These data were supplied 
by Mr. Bayard Long, who also contributed an aecount of the methods 
and objects of his investigation (p. 115). 
Mr. Stone's ideas on nomenclature, to the reviewer at least, are 
thoroughly objectionable. He believes, for example, that botanists 
should follow that zoological usage which permits old varietal names 
to displace later specific names. Happily, most botanists have not 
