108 
C. montanensis Scribn, Montana Reed-grass. 
Apparently rare in the park area, and confined to the drier parts of 
prairies. In flower July 19. 
Peace point, No. 1770. 
C. canadensis (Michx.) Nutt. See Rhod. xxiv, 122 (1922). Blue-joint. 
This species, with its variety robust a , is probably the most important 
source of wild hay and forage that the region affords. It is abundant in the 
moister parts of the upland semi-open prairies, at the willow margins of the 
extensive abandoned channel sloughs of the river bottoms, and on the wide 
expanses of meadow in the lower delta districts. In the upland prairies 
and river deltas it predominates over thousands of acres, to the exclusion 
of nearly all other vegetation. The inhabitants of Chipewyan have for 
many years made hay in the Quatre Fourches division of the Peace delta, 
utilizing the rich growth of this grass. In the same region it is one of the 
most valuable sources of autumn and winter forage for the buffalo. Young 
spikelets appear in late June, and flowers during July and early August. 
East shore of lake Mamawi, Nos. 1755, 1756, 1757; Government Hay 
Camp district, Slave river, Nos. 1751, 1753; Moose (Eight) Lake district, 
Nos. 1749, 1750, 1752; Indian graveyard, Peace river, No. 1759; base of 
eastern slope of Caribou mountains, Nos. 1754, 1758; lower Slave river, 
Nos. 231, 232. 
C. canadensis (Michx.) Nutt., var. robnsta Vasey. See Rhod. xxiv, 122 (1922), and 
xxxii, 42 (1930). Blue-joint. 
Similar to the species in distribution and habits. 
Round lake, about 18 miles south of Pine lake, No. 1762; Peace point, 
No. 1761; Moose (Eight) Lake district, Nos. 1763, 1764; base of eastern 
slope of Caribou mountains, Nos. 1760, 1765, 1766; eastern edge of Caribou 
Mountain plateau, No. 1767. 
C. inexpansa A. Gray, var. brevior (Vasey) Stebbins. See Rhod. xxxii, 50 (1930). 
Reed-grass. 
The writer’s material shows wide variation in the size and form of the 
inflorescence, and may contain more than one variety of C. inexpansa. 
Also, part of it is separable only with difficulty from C. neglecta. 
Common in semi-open prairies and on the slough margins of lakes and 
ponds. It is abundant on the Salt Plain prairies near Heart lake, where 
it shares dominance over large areas with Juncus balticus. It is of note that 
though it is so common on that part of the upland that lies east of Jaekfish 
river, it is not found at all in the prairies at the base of Caribou mountains. 
In regions where it is abundant it is a valuable forage grass. Early flowers 
appear in mid-July, and fruits in late August. 
Murdock Creek district, Nos. 1777, 1778; Government Hay Camp 
district, Slave river, No. 1773; Peace point, Nos, 1771, 1772; near Heart 
(Raup) lake, Nos, 1774, 1775; sink-hole 16 miles east of Moose lake, No. 
1783; Moose (Eight) Lake district, Nos. 1776, 1779, 1780, 1781, 1782. 
