FORM OF ORGANS. 215 
terms—Stasimorphy, Pleiomorphy, Metamorphy, and 
Heteromorphy—to include teratological changes really 
or apparently due to one or other of the causes above 
mentioned. ‘The classification here adopted is of course 
to a considerable extent an arbitrary one and subject 
to correction or modification, as the knowledge of the 
development of the flowers in the various genera of 
plants advances. 
