B. N. A. BOUNDARY COMMISSION, 
ARALIACE. t 
Aralia nudicaulis, LL. Wood End, Souris River (thicket), June 11, 74, past 
flowering. ’ 
Aralia hispida, Winnipeg and North-west Angle Road, July 5, 73, in flower. 
CORNACE. 
Cornus Canadensis, L. Winnipeg and N. W. Angle Road, July 4, ’73, in flower. 
Cornus paniculata, L’Her. Dufferin, June 6, '73, first blossoms. Second crossing 
Souris River, June 8, '74, in flower. 
Cornus stolonifera, Mx. Lake of the Woods. 
CAPRIFOLIACEX. 
Diervilla trifida, Moench. Winnipeg, and N. W. Angle Road, July 4, ’73. 
Linnea borealis, Gron, Lake of the Woods, July 9, ’73, in flower. \ 
Lonicera involucrata, Banks. South Fork of Belly River (in the Mountains), 
Aug. 15, ’74. Kootanie Pass (thicket), Aug. 16, ’74. Both in flower. 
Lonicera oblongifolia, Muhl. Winnipeg and N. W. Angle Road, July 3,’73, in fruit. 
Lonicera parviflora, Lam. Dufferin (thicket), June 14,.’73, in flower. 
Viburnum opulus, L. Dufferin (thicket), June 12, 73, in flower. 
Viburnum lentago, L. Dufferin (thicket), June 13, ’73, in flower. 
RUBIACE. 
Galium boreale, L. Dufferin (open prairie), June 17, 73, in flower. Wood Moun- 
tain, June 23, 74, in flower. Very abundant, especially on the Red River 
prairie. ‘ 
Galium triflorum, Mx. Lake of the Woods, July 8,73, in flower. Turtle Moun- 
tain, July 19, ’73, in flower. 
Galium trifidum, L. Winnipeg and N. W. Angle Road, July 3, ’73, in flower. 
Houstonia ciliolata, Torr. Winnipeg and N. W. Angle Road, July 3, ’73, in flower. 
Houstonia tenuifolia, Nutt. Lake of the Woods, July 7, ’73, in flower, 
VALERIANACE2. 
Valeriana sylvatica, Richards, Rocky Mountains, (6,000 feet) Aug. 16,’74, last 
blossoms. 
COMPOSITA. 
Achillea millefolium, L. Red River, prairie, July 2, ’73, in flower. Abundant 
everywhere from the Lake of the Woods to the Rocky Mountains. 
Ambrosia psilostachya, D.C. Lake of the Woods, July 18, ’73, in flower. West- 
ward, at least over the first and second prairie steppes. 
Ambrosia trifida, L. Var. integrifolia. Near Milk River (low, fertile prairie land) 
July 19, 74, in flower. Specimens about 1 foot high, with a single flowering 
spike, 
Actinella acaulis, Nutt. West Butte (dry hill), July 30, ’74, in flower. Plant not 
uncommon, but only a single flowering specimen obtained. 
Amida hirsuta, Nutt. Foot Hills of West Butte, July 30,’74, in flower. Plant 
with a heavy, unpleasant, minty smell. Number of ray flowers inconstant. — 
Found only in this locality, and growing in a sheltered hollow in great 
abundance, . 
Antennaria plantaginifolia, Br. Red River Prairie, May 20,’74, in flower, Pem- 
bina Mountain, May 26, ’74, in flower. 
Antennaria dioiea, var. rosea, Gaertn. Near Short Creek, June 10, ’73, in flower. 
Antennaria Alpina, Gaertn, Rocky Mountains, Aug. 18, ’74, in flower, 

