102 The Romance of Wild Flowers 
or three days after opening, every one setting a 
vigorous seed-capsule; those of the large-flowered 
form remain in full freshness more than two or three 
weeks, at length withering without having set any 
capsule; when fertilised, they too wither after two or 
three days.” 
These two forms of flowers are not found upon the 
same plant, and in all probability they indicate the 
evolution of a new species, though at present the 
general dissimilarity of the two forms is not suffici- 
ently marked to separate them. 
