THE GENUS VIOLA IN MINNESOTA. 119 
folia—has foliage so nearly approaching the orbicular in 
outline as this. 
6. V. PERAMŒNA, Greene, Pitt. v. 94. There are two 
sheets from Hennepin Co., one by Sandberg in 1890, the 
other by some collector whose initials seem to be “ O. W. O.,” 
of the date 1886, which I can not but regard as belonging 
to this species. But the habitat of Sandberg’s plant is said 
to be “ copses,” and it grows among mosses, these being in- 
tertwined among the petioles and peduncles at base; and 
not such is the habitat of the species where I found it in 
Michigan, nor as collected in Ontario by Mr. Macoun. 
7. V. CUCULLATA, Ait., Greene, Pitt. iii. 143, 336. I find 
a single sheet which I can somewhat confidently name V. 
cucullata. The specimens were collected in Ramsey Co., May, 
1893, by E. P. Sheldon. There is no note of habitat; but 
the plant need be sought only in very wet grassy or sedgy 
meadows. 
8. V. PRIONOSEPALA, Greene, Pitt. v. 99. It is also by 
means of the thorough field work of Mr. E. P. Sheldon that 
we are able to place this comparatively new and distinct- 
ively northern species on the list of Minnesota Violets. 
Two sheets, both from Knife River, in the Lake Superior 
region, collected by him in 1893, seem to belong here; 
though I fail to detect on any of the few sepals examined 
the ciliolation, yet habitally and by leaf and rootstock, the 
plant is V. prionosepala. 
9. V. SANDBERG, Greene, n. sp. Low and rather suceu- 
lent, with light-green glabrous herbage, the rather copious 
foliage at petaliferous flowering forming a tuft 3 inches 
high, the flowers borne somewhat above the leaves, all from 
an elongated suberect not very stout white rootstock with 
