99 
Juniperus communis L., var. montana Ait, J. sibirica Burgsd. Dwarf Juniper. 
Common on dry, rocky hills along upper Slave river and on jackpine 
ridges along Bear river. In fruit about mid- August. 
Government Hay Camp district, Slave river, No. 1516; Bear river, 
Russell , No. 38. 
J. horizontalis Moench. Sabina horizontalis (Moench.) Rydb. Creeping Juniper. 
Common on dry prairies and rocky hills. Collected in fruit during late 
August. 
Near Heart (Raup) lake, Nos. 1513, 1514; Fort Smith, No. 121; near 
Mission Farm, No. 1515; Little Buffalo and Bear rivers, Russell } No. 34. 
TYPHACEAE 
Typha latifolia L. Cat-tail. 
Common on the shores of lakes and ponds, where its stout rootstocks 
are colonizing shallow water. In flower in late July and in fruit by mid- 
August. Muskrats feed extensively on the rootstocks. 
Cree (Mamawi) creek, No. 1530; lower delta of Athabaska river, No. 
126; Murdock Creek district, No. 1533; near Heart (Raup) lake, No. 1532; 
Moose (Eight) Lake district, No. 1531. 
SPARGANIACEAE 
Sparganinm eurycarpum Engelm. See Rhod. xxiv, 26 (1922). Broad-fruited Bur- 
reed. 
Common at the margins of ponds and slow streams in Athabaska-Peace 
delta. Young shoots were collected in mid-June, immature fruits in late 
July, and fully mature fruits August 15. 
Cree (Mamawi) creek, No. 1540; 30th base line district, Slave river, 
No. 128; Murdock Creek district, No. 1541. 
S. multipedunculatum (Morong) Rydb. See Rhod. xxvii, 190 (1925). 
The commonest bur-reed in the park area. It is most abundant at the 
margins of lakes, sloughs, and slow streams. Collected in flower during the 
last week in July, and in fruit during the third week in August. 
Cree (Mamawi) creek, No. 1535; Murdock Creek district, No. 1536; 
Moose (Eight) lake, Nos. 1537, 1538. 
S. angustifolium Michx. See Rhod. xxiv, 26 (1922). Narrow-leaved Bur-reed. 
Occasional in ponds and slow streams. Flowers collected in late July 
and immature fruits August 1. 
Murdock creek, No. 1544; Pine Lake district, No. 1543; Indian grave- 
yard, Peace river, No. 1542. 
S. minimum Fries. 
Apparently rare in Wood Buffalo park, and found only at the margin of 
an upland muskeg pond. In flower July 9. 
Pine Lake district, No. 1539. 
