92 ALTERATION OF POSITION. 



by the woodcut. Let the usual arrangement be thus 

 represented : 



s 



P ST p 



L 



s s 



s standing for sepal, p for petal, l for lip, st for 

 stamen ; then the dislocated form may be represented 

 thus : 



^ 



s s 



v^ V 



Fio. 43. Flower of Oncidium cucullatum, showing union of two lower 

 sepals, displacement of column and lip, <&c. 



In a specimen of Cypripedinm also furnished by Mr. 

 Anderson the appearance was as represented in the 

 accompanying figure and diagrams, figs. 44, 46. 

 Referring to the plan of the natural arrangement at 

 fig. 46, it will be seen that an explanation of the pecu- 

 liar appearance of the flower may be arrived at by 

 supposing a disunion and lateral displacement of the 

 upper segment of the outer perianth together with the 



