148 
Near Heart (Raup) lake, No. 2735, Peace point, Nos. 2733, 2734; 
sink-hole 16 miles east of Moose lake, No. 2732; Moose (Eight) Lake 
district, Nos. 2736, 2737. 
Hedysarum alpinum L., var. americanum Michx. 
Common in upland open woods and prairies. Flower buds collected 
June 20 and mature fruit early in August. The height of the flowering 
season appears to be about mid-July. 
Government Hay Camp district, Slave river, No. 2807; near Heart 
(Raup) lake, Nos. 2804, 2806; Pine Lake district, No. 2805; Peace point, 
No. 2803. 
H. Mackenzii Richards. 
Occasional in Wood Buffalo park. Found in woods and thickets in 
both upland and lowland areas. Flowers collected during the second and 
third weeks of June. 
Along lower Peace river, near the Slave, No. 1005; 30th base line dis- 
trict, Slave river, No. 1004; Salt mountain, No. 2802. 
Vicia amerieana Muhl. vetch. 
Abundant in cabin clearings, open woods, and prairies throughout the 
area. It makes a substantial contribution to the supply of natural feed. 
Early flowers appear in late June and early July, and fruit is mature 
in late July and August. 
East shore of lake Mamawi, No. 2783; Government Hay Camp dis- 
trict, Slave river, Nos. 2796, 2798; near Heart (Raup) lake, No. 2795; 
Fort Smith, No. 1006; Pine Lake district, Nos. 2788, 2789, 2790; Round 
lake, about 18 miles south of Pine lake, No. 2800; Peace point, Nos. 2791, 
2792, 2793; Moose (Eight) Lake district, Nos. 2787, 2797, 2799; Indian 
graveyard, Peace river, No. 2784; base of eastern slope of Caribou moun- 
tains, Nos. 2782, 2786; eastern edge of Caribou Mountain plateau, No. 
2785; Little Buffalo river, Russell, No. 33; junction of Nyarling and Little 
Buffalo rivers, Russell, No. 61. 
V. amerieana Muhl., var. angustifolia N-ees. 
Occasionally found in sloughs and on sand ridges. It is probably 
only a form of the species. Young plants not yet in flower collected June 
12, and with immature fruit July 13. 
30th base line district, Slave river, No. 1010; Moose (Eight) Lake 
district, No. 2801; lower Slave river, No. 1009. 
Lathyrus oehroleucus Hook. Pea-vine, Vetchling. 
Abundant in prairies, clearings, and dry open woods. One of the most 
important sources of forage in the poplar woods that form part of the 
summer range of the buffalo. Young plants not yet in flower or with a few 
early flowers are well started during the second week in June, whereas 
mature fruits are not commonly found much before the first of August. 
The height of the flowering season is about the last of June and the first 
of July. 
