376 PLEIOTAXY OF THE 
disposed in an irregular spiral manner at the extremity 
of the stem, some of the uppermost being occasionally 
verticillate.’ 

Fria. 190.—Double white lily. Multiplication of perianth-segments 
and other changes. 
Pleiotaxy of the corolla—With reference to double 
flowers, it was remarked by Linné that polypetalous 
flowers were, as he said, multiplied, while monopetalous 
flowers were duplicated, or triplicated, as the case may 
be,” a statement that is true in the main, though it 
! Schlechtendal, ‘ Bot. Zeit.,’ xx, 1862, p. 301. 
2 « Phil. Bot.,’ § 126. ’ 
