XXXV1 BOTANY. 
In some species of plants there are two or three kinds of flowers, 
differing as to the relative lengths of the stamens and styles; these 
Fie. XXXVII.—Heterostyled flowers of Buckwheat; the upper figure show- 
ing the long-styled form, the lower the short-styled. (From Miiller.) 
are called heterogonous or heterostyled. When there are two forms, 
viz., one in which the stamens are long and the styles short, and 
Fie. XXXVIII.—Long-, mid-, and short-styled flowers of Oxalis speciosa, 
after the removal of the floral envelopes. (From Darwin.) 
the other with short stamens and long styles, the flowers are 
said to be dimorphous, or more accurately hetcrogonous dimorphous, 
and the forms are distinguished as short-styled and long-styled, 
