Tril)e Miupioliea'. 



ON THE ANATOMY OF MAONOLlACEit:. 245 



have l)eeii uijal)Je to tind any aiiatoiiiicaJ character tliat might «erve 

 to distiiigiiisli MagiioHaceie as a whole from other dicotyledonous 

 families. There is certainJy not a single character common to all the 

 members <jf this family, except such as are common to them and 

 the members of other dicotyledonous families. Again, I have been 

 unable to find in most of the species of this family any anatomical 

 character that might serve to distinguish them (jne from anothei'. 

 However, I found tliat each of the distinct groups included in the 

 family is marked out by certain anatomical characters, as the following 

 synopsis shows. 



A. With diaphragms in the pith : 



Magnolia^ 

 Michelia, 

 Liriodeiidron. 

 V). Without diaphragms in the pith : 



I. With crystal-bearing sclerenchymatous elements in the 

 cortical portion of both stem and ])etiole : 



,, , . , [ Tribe ^chizandreœ. 

 cicluzandm. 



II. Witliout crystal -bearing sclerenchymatous elements in 



the coi'tical portion of stem and petiole : 



1 . A few scattered sclerenchymatous fibres present in 



the cortex of tlie stem ; though totally absent in 



that of the petiole, and that of the midril) of the 



blade. Resin-sacs either indistinct or wantinii' : 



lUiclum. Tribe llUcieœ. 



'1. Sclerenchymatous sheath well de^'eloped, and 



resin-sacs present both in stem and leaf: 



IJriiin/s. 'JVibe Illicieœ. 



0. Sclerenchymatous fibres well developed in the 



