108 



ACADEMIC BOTANY. 



Fig. 150. — n, Pelargonium cordatum. 

 iricolor. c, Geraniurtt Robertianmn. 



Heptameroua (7-merous) ; Trientalis ; OetarmrcMS (8-merous), a mul- 

 tiple of 2 ; Clusia ; Per- 

 simmon ; EnneaTnerous 

 (9-merous), a multiple 

 of 3 ; Sassafras ; Decame- 

 rous (10-merous), a mul- 

 tiple of 5; Pokeweed. 

 In most "of these, how- 

 ever, some one or other 

 of the floral whorls is 

 deficient in the radical 

 numher. 



2 36. Deviations 

 from the perfect type 

 give us : 



a. Deficiencies, 

 Suppression, parts 



b. Pelargonium wanting (Apetttke) ; 



b. Cohesion, Con- 

 nation, union of like parts {Monopetalce) ; 



G. Consolidation (Adhesion, Adnation), union of unlike 

 parts {Ovary adherent to calyx or perianth) ; 



d. Irregular development, 

 like parts diiferent, as the 

 petals of the Violet and 

 Geranium (Fig. 150); 



e. Unsymmdrical devel- 

 opment, parts of the sev- 

 eral whorls different in 

 number, as in the Mus- 

 tard Family (Fig. 162), 

 in which there are four 

 petals and six stamens ; 



/. Appendages, like the 

 Corona (crown) of the 

 Narcissus and Passion- 

 flower (Fig. 155), and the 

 spur of the Orchis (Fig. 

 152). 



g. Transformations, in j Ji^i.J,"-'^'"^'"^ <^""^ 

 which one part is changed 

 to another, as in the Canna and Ginger (Fig. 151), in 



