6 PITTONIA. 
petioles, of cordate-ovate outline, distinctly and somewhat 
closely crenate, the upper surface with scattered and some- 
what appressed short hairs, the plant otherwise glabrous: 
peduncles long, surpassing the leaves, bracteolate near the 
middle: sepals lance-linear, 4 lines long, with narrow scari- 
ous margins and an acutish but callous-tipped apex : petals 
apparently pure white, spatulate-oblong, more than 1 inch 
long (the expanded corolla more than an inch in diameter), 
three of them bearded below with strongly clavate white 
hairs. 
A very noteworthy new white violet, found in a bog 
meadow some miles from Charlottetown, Prince Edward 
Island, by Mr. Laurence W. Watson, in June, 1898. Though 
doubtless of the V. blanda group, it is remarkable for the 
great dimensions of the corolla, and the robustness of the 
general habit, the leaves, however, being much smaller in 
proportion to the whole plant. The rhizome, as far as the 
specimens show it, is much shorter and stouter than in any 
of the other relatives of V. blanda. We are not informed as 
to whether the flowers are, as in our other white violets, 
fragrant. 
V.RETUSA. Acaulescent, low, stout and subsucculent, gla- 
brous throughout except the petals: lowest leaves subreni- 
form and small, abruptly acutish, the others successively 
broadly cordate-ovate and deltoid-ovate, with an abrupt 
short acumination, all with broad open sinus and more or 
less distinctly tapering to the short petiole, the margin 
crenate-serrate: peduncles stout, about equalling the leaves, 
bibracteolate above the middle, the bracteoles broad, tri- 
angular-subulate: sepals lanceolate, nerveless, scarious-mar- 
gined: petals narrowly spatulate or oblong-spatulate, trun- 
cate or retuse at apex, apparently blue, three of them 
somewhat bearded at base. 
Plains of northern Colorado, toward the foothills; the 
best specimens from Carl F. Baker, collected at Fort Collins, 
