226 Field, Forest, and Wayside Flowers 
the corn-cockle’s butterfly friends go to rest, it 
closes. 
The evening-lychnis, which is still somewhat rare 
in this country, resembles the corn-cockle almost 
exactly in size, 
form, and foliage, 
but is adapted in 
several interesting 
ways to its chosen 
friends, the night- 
moths. It opens 
> at evening, after 
remaining partially 
closed all day, and 
thus it saves its 
nectar for its noc- 
turnal guests. That 
they may more read- 
ily see it in the 
dark fields it glim- 
mers white, and as, 
an additional help 
Fic. 63.—Corn-cockle (Lychnis githago). te then 
(From Annual Report of U. S. Department of 
Agriculture for 1886.) 
in finding 
it the flower is 
fragrant. Lastly, the evening-lychnis has no lines 
to indicate the whereabouts of its nectar, for these 
