133 
CERATOPHYLLACEAE 
Ceratophyllum demersum L. Hornwort. 
Apparently occasional in the park area, and collected thus far only in 
a lowland slough pond. The genus is badly in need of study in America, 
and may contain more than one species in the north. The rarity with 
which fertile plants are collected makes this very difficult. The writer's 
specimens were found with mature fruit July 28. 
Murdock Creek district, No. 2345. 
RANUNCULACEAE 
Actaea rubra (Ait.) Willd. Baneberry. 
Common in poplar or poplar-spruce woodlands throughout the area. 
There is a great variety in the colour of the berries, some of them maturing 
white, and others bright red. Flowers appear about the third week in June, 
and fruit during the latter half erf July and August. The rootstock has a 
strongly purgative action, and the berries are known to be somewhat 
poisonous. 
East shore of lake Mamawi, No. 2390; 30th base line, Slave river, No. 
755; Government Hay Camp district, Slave river, Nos. 2394, 2398, 2399; 
near upper Smith rapids, No. 757; Fort Smith, No. 754; Pine Lake district, 
Nos. 2400, 2401; Moose (Eight) Lake district, Nos. 2395, 2396, 2397; 
Indian graveyard, Peace river, No. 2389; base of eastern slope of Caribou 
mountains, Nos. 2391, 2392, 2393. 
Aquilegia brevistyla Hook. Columbine, 
Occasional in poplar woods, chiefly in the upland districts. Flowers 
observed from June 18 to July 11, when the fruiting follicles arc well formed. 
Where it inhabits more damp areas the flowering period is a little longer. 
Mature fruit collected August 1. 
Fort Smith, No. 760; Pine Lake district, No. 2429; Indian graveyard, 
Peace river, No. 2428; specimen of unknown localitj’-, No, 2427. 
Delphinium scopulorum Gray. var. glaucum Gray. Larkspur. 
Common in upland clearings and open poplar woods, and abundant 
in some of the semi-open prairie districts. In the prairies at the base of 
Caribou mountains it grows to such size and numbers as to give a purple 
colour to large areas during its flowering season. A record plant measured 
9 feet 3 inches in height, with a small part of the inflorescence still to be 
unfolded. Rare individuals have a tendency toward albinism. Young 
shoots have been observed as early as June 19, and flower buds from June 28 
to July 7. The earliest flowers found thus far were on July 5, and flowering 
continues through most of July. Immature fruits are found in the last 
week of July, and mature ones in August. Known to be poisonous to cattle, 
producing stiffness, convulsions, and death. 
Government Hay Camp district, Slave river, Nos. 2355, 2356; Pine 
Lake district, Nos. 2357, 2358; base of eastern slope of Caribou mountains, 
Nos. 2352, 2353; lower Slave river, Russell , No. 75. 
