116 PITTONIA. 
important gatherings of my own in the southern counties — 
in 1898. | 
While much of the material is good, some is poor, and — 
the determinations in the case of some are not very positive. — 
As a subject for herbarium study the genus is at best diffi- 
cult. Nevertheless, the following catalogue can not fall 
short of proving eminently serviceable to all who are en — 
gaged in research upon the genus in the Northwest; and | 
further investigation will be likely to call for some additions — 
to the list, and doubtless, ultimately, for a revision of the — 
whole. 
1. V. cusprpata, Greene, Pitt. iii. 314. Established by 
me in 1898 upon material from Wisconsin, I find in the — 
Minnesota Herbarium the oldest specimens I have seen, of x 
this excellent western violet. One sheet, exhibiting buta — 
single specimen and that in petaliferous flower, purports to _ 
have been collected at Minneapolis, in 1878, by J. Č i 
 Kassube. Sandberg collected it at Vasa in May, 1882, and 3 
at Red Wing in 1876, the specimens in both instances very 
good, though in the early and petaliferous condition only. : 
But the more recent collectors, on the other hand, have — 
taken the plant in its summer stage only. Such are two — 
sheets in my own herbarium, the one from Austin, the 
other from near Windom, both in June, 1898; while in the 
Minnesota Herbarium there are some seven such sheets, al : 
gathered last year (1902), in the southern section of the 
State, mostly by W. H. Wheeler and C. O. Rosendabl. 
What is now very desirable, is a systematic collecting of 
this fine species in its petaliferous and apetalous stages, both : 
in each instance from the same locality, and from the sett- 
same spot. No such work on it has yet been done. > 
2. V. POPULIFOLIA, Greene, Pitt. iii. 337. Some youngand — 
rather imperfect specimens, obtained at Two Harbors ™ 
