EVENING PRIMROSE FAMILY 
( Onagracece ) 
A family of herbs or shrubs with perfect, usually four- 
parted flowers, four petals, four sepals, four or eight 
stamens and a two or four-parted stigma. 
(A) Great Willow-herb; Fireweed (Epilobium an- 
gustifolium) springs up in profusion and attains its 
greatest growth in clearings or recently burned land. 
The tall, upright stem is usually simple, but occasion¬ 
ally slightly branched at the top. It attains heights of 
from two to eight feet. 
The flower spike is long; the flowers, blooming from 
the bottom, upwards, leave upright, long, slender pods. 
The Great Willow Herb is abundant throughout our 
range in low ground, blooming during July and August. 
(B) Hairy Willow Herb (Epilolium hirsutum) 
(European) has become naturalized and is fairly com¬ 
mon in waste places and about old dwellings. It is 
branchy, hairy, has finely toothed, stemless leaves, and 
four-parted, magenta flowers growing from the angles 
of the upper leaves. 
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