155 
ERICACEAE 
Ledum groenlandicum Oeder. Labrador Tea. 
A common shrub in muskegs throughout the region. Its dried leaves 
have been used commonly to make a native tea. The height of its flowering 
season is in late June and early July. Fruit is matured in August. 
Pine Lake district, No. 2982; Moose (Eight) Lake district, Nos. 2983, 
2984, 2985; base of eastern slope of Caribou mountains, No. 2980; eastern 
edge of Caribou Mountain plateau, No. 2979; “Wood Buffalo Park,’’ 
Russell, No. 56. 
L. pa lustre L., var, decumbens Ait. Narrow-leaved Labrador Tea. 
Apparently rare, and collected thus far only from a muskeg in Caribou 
mountains, where it had immature fruit in mid-July. 
Eastern edge of Caribou Mountain plateau, No. 2986. 
Kalmia polifolia Wacg. 
Reported in Fort Smith district, but not seen by the writer. Known 
on lake Athabaska and at Resolution. 
Andromeda polifolia L. Bog Rosemary. 
Rare or occasional in the park area, and collected thus far only from 
a single upland muskeg. It grows on open mossy hummocks, and had 
immature fruit July 9. 
Pine Lake district, No. 2987. 
Ghamaedaphne calyculata (L.) Moench. Cassandra, Leather-leaf. 
Occasional in cold upland muskegs. Collected thus far only in Pine 
Lake district and in Caribou mountains, where it is a colonizing shrub in 
hummocks of Sphagnum. Immature fruit collected in mid- July. 
Pine Lake district, No. 2977; eastern edge of Caribou Mountain 
plateau, No. 2978. 
Arctostaphylos Uva-ursi (L.) Spreng. Bearberry, Kinnikinnik. 
Common on sandy and rocky hills, and in dry upland woods. Found 
in flower during most of June, and with green berries in July. Fruit is 
usually not matured until August. The dried leaves have been used as a 
substitute for tobacco. 
East shore of lake Mamawi, Nos. 2999, 3000; along Quatre Fourches 
river, No. 1171; Pine Lake district, Nos. 2995, 2996; Peace point, No. 
2994; Moose (Eight) Lake district, Nos. 2993, 2997; eastern edge of 
Caribou Mountain plateau, No. 2998. 
A. rubra (Rehder and Wilson) Fernald. A. alpina (red-fruited form) Richards, 
Mairainia alpina (red-fruited form) Britton and Rydb. Arctous (Gray) Niedzu. 
See Rhod. xvi, 32 (1914). Alpine Bearberry, 
Common in muskeg timber throughout the upland. The bright red 
berries are very tart in flavour. Fruit collected during July and August. 
Pine Lake district, No. 2991; Moose (Eight) Lake district, Nos. 
2990, 2992; base of eastern slope of Caribou mountains, Nos. 2988, 2989. 
