232 Rhodora i [DECEMBER 
took. In these herbaria the tall plant, found in flower at Fort Fairfield 
by Miss Shaw, is well represented by fruiting material which proves 
it beyond a doubt to be 7: occidentale, Gray, a species characteristic of 
the mountains of British Columbia, Washington and Oregon, rarely 
found eastward to the Rockies. So far as the herbarium material 
shows, the Nova Scotia and the Anticosti plants are both good 7° poly- 
gamum, rather than 7. purpurascens with which they have been placed. 
A fruiting specimen from the mouth of the Restigouche, reported in the 
first part of Macoun's Catalogue as 7. dioicum, has subsequently been 
treated by Professor Trelease as a probable hybrid between that species 
and Z. purpurascens. But that this disposition of the plant is far from 
satisfactory may be seen from the fact that the Restigouche speci- 
men comes from a region 230 miles northeast of the nearest authen- 
ticated station of Z. dioicum,' and some 450 miles from the northeast- 
ern known limit of Z. purpurascens. The plant is, however, identical 
with the larger species of the St. John and Aroostook valleys and it 
matches perfectly 7: occidentale of the Northwest. 
The smaller Zhadictrum, of which fruit was obtained at Fort 
Fairfield during the past September, is beautifully represented in the 
herbarium of the Geological Survey Department of Canada by a 
sheet of flowering specimens collected by Professor Macoun in 
thickets at Ottawa in August, 1894. In habit this plant strongly 
suggests small-leaved forms of the Rocky Mountain 7. Fendleri, but 
that species has elongated rootstocks and strongly compressed 
achenes; while in the northeastern plant the caudex is short, and 
the short, plump achenes terete. This plant, as already stated, can be 
referred to no species of America nor of the Old World, and it is 
here proposed as 
THALICTRUM confine. Rootstock 2 to 4 cm. long, bearing 
10 to 12 strong roots: stem slender, 3 to 6 dm. high, puberulent, 
pale green, often finely mottled with purple, leafy to the summit: ` 
the four or five leaves glandular-pruinose, glaucous beneath, 
the lower including the long petiole r.5 to 2 dm. long, the upper- 
most including the short petiole 3 or 4 cm. long; leaflets sub- 
orbicular broadly obovate or flabellate, coarsely toothed, 0.75 to 
1 cm. long, the terminal on slender petiolules, the lateral short- 
1 K. C. Davis (Minn. Bot. Studies, Ser. 2, 515) credits this species to Labrador, 
but the occurrence of the plant in that district is seriously doubted. The only 
Labrador specimen so named in the herbarium of the Geological Survey Depart- 
ment of Canada is clearly 7: polygamum. 
