THE EDITOR'S MEDICAL BOTANY. 



NINTH CLASS, ENNEANDRIA. 



Cinnamon Tree (Laurus Cinnamo- 

 mum). 



This evergreen tree, which be- 

 longs to the Jussieuan order, Lauri- 

 nece, is found in tropical Asia, parti- 

 cularly Ceylon, flowering in January. 

 The flowers, which are white, grow 

 in axillary panicles. There is no 

 calyx ;-the corolla has six petals, oval 

 pointed, and spreading; the fruit is 

 an oval berry, with a depressed tip, 

 and one seed. The bark, which is 

 the part used, is taken off from May 

 till October. 



a Flower, showing the nine sta- 

 mens. 



b Anther magnified, showing the 

 apertures, with their lids, for the dis- 

 charge of the pollen. 



c The single pistil. 



TENTH CLASS, DECANDRIA. 



Senna Plant ( Cassia Senna). 



This annual plant, which belongs 

 to the Jussieuan order, Leguminous, 

 is a native of Africa, flowering in 

 July and August. The flowers, 

 which are . yellow, grow in loose 

 spikes ; the calyx has five narrow 

 leaves; the corolla has five petals, 

 the two upper smaller than the three 

 under ones ; the fruit has two valves 

 and from six to nine cells, with a 

 seed in each. The leaves, which 

 are the part used, are winged, the 

 leafits being unequal at the base. 



a Flower showing the ten stamens, 

 and single pistil. 



