132 PITTONIA. 
white in this species. The specimens are in petaliferous : 
flower, and the petals, in the dry state, appear as if they 
might have been of a very pale yellow, though decidedly 
yellowish, not at all of the purple-tinted whiteness of those 
of the Canadensis aggregate. I also observe that the sepals — 
in this, at least in as far as relates to petaliferous flowers, 
radiate away from the ovary quite as in others of the pubes- 
cens aggregate; so that this character is not distinctive; and 
V. achlydophylla is marked, in the main, by the dark color 
of its herbage, the sinuate rather than crenate margin of its 
leaves; probably also by the very pale yellow of its corollas. 
Also, its habitat is apparently peculiar, that of low wood- 
lands, very moist. The labels of V. pubescens, in so far as 
they allude to habitat, assign it to upland dry woods and 
wooded hills. | 
I am now acquainted with some indications that V. — 
achlydophylla extends eastward to western New York along 
the lakes. 
From these remarks it will be manifest that there is wide 
room for careful research in the Minnesota field, both on ; 
the limits of definable species, and their geographic distri- 
bution. 
I must conclude with some references to the list of violets 
given in the Metaspermz. Certain species therein credited 
to the State seem to me to require confirmation as members 
of the Minnesota flora. 
V. striata, Ait. Though credited to Minnesota in the : 
latest edition of Gray’s Manual, the two specimens in the 
State Herbarium so labeled are, in one case, V. subvestila, 
in the other V. rugulosa. Bradley’s Spring Park “V. striata : 
is this last. 
V. rotundifolia, Michx. There is no specimen of this in : 
the collection. Of the two that are cited by number in the — 
