48 SELECTED WESTERN FLORA 



4. A. riparia, Fernald. 



Resembling the former, but more slender and less pubescent; the sepals 

 white or rarely reddish ; the fruit head only sub-cylindrical. ' Same range as. 

 preceding, but flowering somewhat earlier, and not so common. 



5. A. canadensis, L. 



Stem hairy, 6-12 in. high; involucre at first 3-leaved with one naked 

 peduncle, but later two other peduncles appear, each bearing a 2-leaved 

 involucre about its middle; these may branch similarly; radical leaves 5-7- 

 parted; sepals large, white; fruit head globular. Common around the edges 

 of groves or on damp prairie, Man.-Alta. 



6. A. quinquefolia, L. Wood Anemone. 



Stem low, smooth; involucre of 3 petioled leaves each in turn 3-parted; 

 peduncle short ; flower large for size of plant, white or tinged with purple ; 

 carpels with a hooked beak. Moist woods, spring, Man. and westward. 



7. A. parviflora, Michx. 



Stem slender, 4-8 in. high from a creeping rootstook; leaves 3-parted, the 

 divisions 2-3-lobed ; flowers solitary, white. River banks, Alta. and north- 

 ward. 



6. CLEMATIS. Virgin's Bower. 



Perennial, more or less woody vines climbing by means of clasp- 

 ing petioles of the leaves ; sepals 4 or 5, petal-like ; stamens numerous ; 

 pistils numerous; achenes with a long, plumose style. 



1. C. virginiana, L. 



Leaves 3-parted, leaflets acute, thin, dark green above; flowers small, in 

 cymose panicles, dicecious, but the pistillate usually with a few sterile sta- 

 mens. Climbing over shrubs in moist woodland, south end of Lake Win- 

 nipeg. (Drummond.) 



2. C. ligusticifolia, Nutt. 



Similar to the preceding, but leaves 5-foliate, the leaflets smaller, paler in 

 color and thicker in texture. " Climbing over bushes or sand at the source 

 of the Qu'Appelle." — Macoun. Southern Alta. 



3. C. verticillaris, DC. 



Stem woody, climbing, smooth; leaves 3-parted; flowers large, each on a 

 separate peduncle; sepals thin, spreading, pinkish purple. Through the 

 wooded district, Man. -Alta. 



7. CALTHA. Marsh Makigold. 



Sepals 5-9, large, deciduous and petal-like; petals wanting; sta- 

 mens numerous; carpels few to numerous, sessile, forming in fruit 



