DISPLACEMENT, 9] 
So, too, the alteration from’ verticillate to spiral, or 
vice versd, may take place without any other notable 
change.t This may frequently be seen in Rhodo- 
dendrons. 
Displacement of the parts of the flower—This subject 1s 
partly touched on in the chapters on solution, ad- 
hesion, and in those on_ hyper trophy, elongation, 
prolification, &e., so that in this place it is only requi- 
site to offer a few general remarks, and to refer to 
other sections for further details. Morren, in referring 
to displacement of the floral organs, mentions an 
instance in a Fuchsia, wherem the four petals in place 
of being alternate with the sepals were placed in front 
of them, owing to the adhesion that had taken place 
between the petals and the stamens. He speaks of 
this transposition as metaphery.”. The same author 
also gives an account of the displacement of several of 
the organs of the flower in Cypripedium insigne, the 
displacement being consequent, apparently, on a spiral 
torsion proceeding from right to left, and involving the 
complete or partial suppression of several of the organs 
of the flower. The dislocation of organs im a spiral 
direction led Morren to apply the term ‘‘ speiranthie ”’ 
to similar deviations from the usual construction. 
Changes of this kind among Orchidacee are by no 
means uncommon ; the following may be cited by way 
of illustration. Ina specimen of Oncidinm cucullatum 
furnished me by Mr. Anderson, well known for his 
success as a cultivator of Hie plants, there was, 
associated with a cohesion of one sepal with another, 
and probably dependent on the same cause, a dis- 
placement of the sepals and petals—so that all were 
dragged out of place. This dislocation may be better 
appreciated by the accompanying formula than even 
' «Clos. Mem. ee Toulouse,’ 5th ser., t. vi, pp. 51, 70. 
* «Bull. Acad. Roy. Belg.,’ xviii, part ii, p. 505, and vol. xvii, part 1, 
p. 196, and vol. xix, part i, p. 260. 
