364 B. N. A. BOUNDARY COMMISSION. 


Chenactis, D. C., Sp. I. Wood Mountain. Shore of Saline Lake. July 20, 
74, in flower. k 
Chrysopsis villosa, Nutt. Rising ground east of Red River prairie. August 22, ’73. 
Turtle Mountain, (open prairie.) July 23,’73. Both in flower, Abundant 
everywhere on dry stony plains, . 
Chrysopsis (Diplopappus) hispida, Hook. Wood End, or Wood Mountain, (Label 
of specimen lost.) Abundant in the Coteau. 
Cirsium muticum, Mx. Lake of the Woods. July 30, ’73, in flower. 
Cirsium altissimum, Spring. Turtle Mountain, (open prairie.) August 5, ’73, in 
flower. Kootanie Pass, (meadow.) August 14, ’74, still in flower. 
Coreopsis tinctoria, Nutt. South of Wood Mountain. July 1, ’74, first blossoms. 
West Fork Milk River. August 22,’74, in flower. Not abundant, nor observed 
on the northern side of the watershed. 
Crepis elegans, Hook, Kootanie Pass. August 15, ’74, still in flower. Found on 
gravel banks flooded in Spring. 
Diplopappus umbellatus, F. and G. Turtle Mountain. August 11, ’73, in flower. j 
Echinacea purpurea, Meench. Wood End, (open prairie.) July 8, ’74, in flower. 
Erigeron Canadense, L. Lake of the Woods. July 22, ’73, in flower. var, 4 
pusillum, Nutt. August 1, ’73, in flower. | 
Erigeron strigosum, L. Lake of the Woods. July 22, ’73. Turtle Mountain 
August 2,’i3, both in flower. Sweet Grass Hills, July 24, ’74, in flower. 
Erigeron glabellum, Nutt. Dufferin, June 14,’73. Turtle Mountain. August 1, 
73. Near Short Cr, June 10, ’74. South Fork Belly River, August ’74. All 
in flower. Abundant across the whole prairie region and assuming many 
varietal forms. 
Erigeron pumilum, Nutt. Wood End, (open prairie,) June 27, 74, in flower. 
Erigeron compositum, Pursh. Rocky Mountains, (7,000 feet,) August 18, 74, in 
flower. Variety with ciliate petioles, but elabrous leaves, 
Erigeron alpinum, L. Rocky Mountains, (7,000 feet,) August 18, ’73, in flower. ¢ 
Much reduced for ms, 
Eupatorium perfoliatum, L, Lake of the Woods, July 3, ’73, in flower. 
Eupatorium purpureum, L. Turtle Mountain, (marsh) Aug. ee 73, in flower, 
Gaillardia pinnatifida, Torr. Red River prairie, June 27, ’73. Pembina Moun- 
tain, July 4,’74. South of Wood Mountain, June 27, ’74. All in flower. 
Grindelia squarrosa, Dunal. First Crossing Souris River, Aug. 7, °73. West 
Butte, Aug. 2, ’74. Second Branch of Milk River, Sept. 1, ’74. All in 
flower. 
Gnaphaltium polycephalum, Mx. Lake of the Woods, July ’73, in flower. 
Helenium autumnale,L. Second Crossing Souris River, Aug. 11, ’73; Sept. 20, 
‘74; both in flower. 
Heliopsis scabra, Dun. Red River prairie, June 21, ’73, first blossoms. Turtle 
Mountain (thicket), Aug. 2, ’73, in flower. 
Helianthus rigidus, Duf. Rising ground east of Red River valley, Aug. 23, ’73. ’ 
Turtle Mountain (open prairie), July 26, ’73. Second branch Milk River, . | 
Aug. 6,’74. All in flower, 
Helianthus giganteus, L. Dufferin, Sept. 1, 73, in flower. Coming up in great — 
abundance where new prairie land ploughed, probably from seed stored by 
the gophers in their underground burrows. 
Hieracium Canadense, Mx. Lake of the Woods, July 25, ’73. Turtle Mountain, 
Aug. 2,’73. South Fork Belly River, Aug. 15,’74. Foot hills Rocky Moun- 
tains, Aug. 26,’74. All in flower. 
Mieracium triste, Willd, Rocky Mountains, Aug. 16, ’74, in flower. 
