118 
JUNCACEAE 
J uncus bufonius L. Toad Rush. 
Occasional on damp slough margins and in damp rock crevices. Col- 
lected in fruit in mid- July and early August. 
East shore of lake Mamawi, No. 2009; Round lake, about 18 miles 
south of Pine lake, No. 2010. 
J. Vaseyi Engelm. 
Occasional in' sandy, open places on the upland. Collected in fruit 
during the third week in August. 
Along trail about 10 miles southwest of Fitzgerald, No. 1997; sink-hole 
16 miles east of Moose lake, No. 1998. 
J. balticus Willd. Baltic Rush. 
Common on muddy and sandy shores in the river lowlands and in parts 
of the upland districts. The most prominent band of vegetation around the 
salt flats in the Salt Plain region is made up of this species accompanied 
by Calamagrostis inexpansa var. brevior. The rush probably makes very 
little contribution to the forage unless in its early, succulent stages of 
growth, when its young shoots are greedily eaten by grazing stock. Flower 
buds appear in mid- June, and fruits are matured in August. 
Government Hay Camp district, Slave river, No, 2004; near Heart 
(Raup) lake, No. 2005; near Mission Farm, No. 2001; Pine Lake district, 
No. 2003; Peace point, No. 2002. 
J. fill for mis L. Thread Rush. 
Apparently occasional in the park area, and collected thus far only 
from a sandy sink-hole prairie on the upland. In fruit August 20. 
Sink-hole 16 miles east of Moose lake, No. 2008. 
J. nodosus L, 
Common on wet, sandy or muddy river banks in the lowland districts, 
and occasional in similar situations on the uplands. In flower in mid-July, 
and immature fruit in mid- August. 
Lower delta of Athabaska river, No. 408; Government Hay Camp 
district, Slave river, No, 2007; Fort Smith, Russell, No. 28; sink-hole 16 
miles east of Moose lake, No. 2006. 
J. alpinus Vill. 
Occasional on wet, sandy or muddy shores. Collected in flower during 
June. 
Lower delta of Quatre Fourches river, No. 401; Pine Lake district, 
No. 2000. 
J. alpinus Vill., var. rariflorus Hartm. J. alpinus var. insignis Fries. J . Richardson- 
ianus Schultes. 
Apparently occasional on muddy shores. Immature fruit collected in 
mid-August. 
Government Hay Camp, Slave river, No. 1999. 
