we Bho al 
~ 
B. N. A. BOUNDARY COMMISSION, 
ACERINA. 
Acer rubrum, L. Kootanie Pass, Mountains near Waterton Lake. 
Negundo aceroides, Meench, Lake of the Woods, Red River Valley, and westward 
in the vallies of rivers. In flower at Dufferin, May 8, ’74. Finds its northern 
limit on the N, Saskatchewan in lat. 54°, according to Richardson, Its sap 
is frequently collected and boiled down to make sugar in spring. 
POLYGALACEXR. ” 
Polygala polygama, Walt. Lake of the Woods, July 24, '73, in flower. 
Polygala senega, L. Rising ground E. of Red River prairie, June 20, ’73, in flower. 
Lake of the Woods, July 22, ’73, with ripe seed. 
LEGUMINOS. 
Astragalus Canadensis, L. Winnipeg and N. W. angle road, July 5, '73. Red 
River prairie, June 24, 73. Turtle Mountain, July 30,’73. Wood End, July 
12, ’°74—all in flower. 
Astragalus Canadensis, Var. Wood End, June 30,'74. Lake of Wood Mountain, 
June 27, ’74—both in flower. 
Astragalus caryocarpus, Ker. Rising ground E. of Red River prairie, June 20, °73— 
fruit fully formed. West of Pembina escarpment, (dry bank,) May 26, ’74, 
in flower. Very common on the second prairie steppe, W. of Pembina 
River.—Var. Wood End, (dry bank), June 11, ’'74, with larger leaves and 
fewer flowers, but not agreeing with A. mezicanus, and A. caryocarpus of the 
normal form, growing on the same bank, but having its fruit fully formed. 
Astragalus hypoglottis, L. Red River Prairie, May 22,’74, first blossoms. June 4, ’73, 
in flower. First crossing Souris R (Valley and open prairie), June 3, ’74, in 
flower. Abundant. Traders’ Rd. June 19,’74, in flower. White variety. 
Astragalus flexuosus, Dougl. Red River Prairie, June 27,’73. Turtle Mountain 
(dry bank,) July 26,’73. Wood Mountain (dry open prairie,) June 25, ’74. 
All in flower. 
Astragalus flezuosus, Dougl. Var. elongatus (= Phaca Elongata, Hook.) Near Short 
Creek (open prairie) June 10, ’74, first blossoms. 
Astragalus Minsouriensis, Nutt. Near Short Creek, (dry hill sides), June 10, '74, in 
flower. 
Astragalus pectinata, Dougl. First crossing Souris River, (dry open prairie), June 
3, 74, first blossoms. Plant with a strong unpleasant odour. 
Astragalus adsurgens, Pall. Traders’ Road, (open prairie), June 21, 74, in flower, 
forming dense tufts about 18 inches high. South of Wood Mountain, June 
30, ’74, in flower. 
Astragalus aboriginorum, Rich. Pembina Mountain, (open prairie), July 4, ’73—in 
flower. Short Creek, June 10, ’74—in flower. 
Astragalus Bourganii, Grey. Rocky Mountains, (6,000 feet): August 17, ’74—in 
flower. 
Astragalus triphyllus, Pursh, (not Phaca cexspitosa Nutt.) First crossing Souris 
River, (dry gravelly banks), June 3, ’74, last blossoms. Forming dense matted 
tufts, flowers white with bright purple tips when fresh. 
Astralagus cespitosus, Grey. White Mud River, (dry bank), June 3, '74, with seed 
nearly ripe. 
Astragalus tegetarius, Watson. Kootanie (Pass, dry bank,) August 14, ’74—in 
flower. , 
Desmodium Canadense, D.C. Lake of the Woods. July 28, ’73, in flower. 
Hedysarum boreale, Nutt. Foot Hills of Rocky Mountains, (thickets and borders 
of streams), August 15, ’74, still in flower in sheltered localities. 
Lupinus argenteus, Pursh, South of Woody Mountain. July 25, '74, in flower. 

a ea 
