(A) Evening Primrose (CEnothera biennis) is an ex¬ 
ceedingly common biennial plant, of nocturnal habits, 
the flowers spreading wide open at dusk and partly or 
wholly closing the next morning. 
The stem is soft-hairy, quite stout and often very tall, 
ranging from 1 to 6 feet in height. Both the stem and 
the leaves are rather coarse in texture. The flowers 
are seated in the angles of the upper leaves. The four, 
pale, lemon-yellow petals are large and rounded, the 
flower spreading slightly less than two inches. 
The lower buds open first, only a few at a time, so 
that usually we may find seed-pods seated among the 
leaves just below the flowers and undeveloped buds and 
leaves above. Primrose blooms in fields and roadsides, 
" ^everywhere, from July to September. 
-(B) Sundrops {(Enothera fruticosa ) a somewhat 
similar, diurnal species, with a branched stem grows 1 
to 3 feet high. The pale yellow flowers measure from 
~y 2 to 1 inch across; they are in loose terminal clusters 
or from the angles of the upper leaves. The leaves are 
linear-lanceolate, slightly toothed. Common from Me. 
to Minn, and southwards. 
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