152 
HALORAGIDACEAE 
Myriophyllum exalbeseens Fernald. M. spicatum L. of auth. See Rhod. xxi, 120 
(1919). Water Milfoil. 
Abundant in the shallow water of slough ponds and sluggish streams. 
Collected with flowers during the first half of August, and with immature 
fruit August 15. 
Cree (Mamawi) creek, No. 2882; Murdock Creek district, No. 2884; 
Moose (Eight) lake, Nos. 2883, 2885, 2886. 
HIPPURIDACEAE 
Hippuris vulgaris L. Mare’s-tail. 
Common in the shallow water on the shores of ponds and slow streams. 
Collected in flower in late June and late July. Fruits are matured in 
August. 
Lower delta of Athabaska river, No. 1077; Murdock Creek district, 
Nos. 2877, 2878; Government Hay Camp district, Slave river, No. 2879; 
near Heart (Raup) lake, No. 2880; Pine Lake district, Nos. 2874, 2876; 
sink-hole 16 miles east of Moose lake, No. 2875; Moose (Eight) Lake dis- 
trict, No. 2881; base of eastern slope of Caribou mountains, No. 2873; Sass 
creek, Russell , No. 39. 
ARALIACEAE 
Aralia nudicaulis L. Wild Sarsaparilla. 
Common in open (chiefly poplar) woods on the uplands, and in 
crevices on the granite hills. Flower buds collected June 9, and flowers 
June 22. Fruit matures in the latter part of July or in August. 
Along Quatre Fourches river, No. 1082; Pine Lake district, No. 2888; 
Peace point, No. 2887; base of eastern slope of Caribou mountains, No. 
2889. 
TTMBELLIFERAE 
Cicuta occidentals Greene. Water Hemlock, Beaver Poison. 
Occasional in wet meadows throughout the area, and common in a few 
places. New rosettes were collected June 12, flowers during July, and 
immature fruit in the first three weeks of August. The whole plant is very 
poisonous, especially the root which is occasionally taken for parsnip. 
It causes convulsions, and if eaten in quantity causes death. 
Lower delta of Athabaska river, No. 1086; east shore of lake Mamawi, 
No. 2890; 30th base line district, Slave river, No. 1088; near Heart (Raup) 
lake, No. 2891 ; Moose (Eight) lake, No. 2892. 
C. bulbifera L. 
Apparently only occasional in the park area, although it is common 
on the marshy shores of Moose lake. In flower and with maturing bulblets 
during the first half of August. Very poisonous, producing disorders similar 
to those of C. occidentalis . 
Moose (Eight) lake, Nos. 2893, 2894. 
