III.] 



LABIA TJE. 



257 



The Sub-type differs in its twining stem, in the very small 

 calyx, reduced to a mere ring, and in the little cups sup- 

 porting the seeds. The pair of valvate bracts must not be 

 mistaken for a calyx. 



This very large tropical Family includes many insignificant 

 weeds, and many species with beautiful and sho^vy flowers ; 

 very few, however, are turned to any economic use. A 

 few are employed in native medicine, and one or two 

 afford dyes. 



71. Natural Order, Labiatce. — The Labiate Family. 



Herbs or shrubs, usually aromatic, with opposite leaves 

 and irregular flowers. Stamens two or four. Ovary four- 

 celled and deeply four-lobed. 



Type — Sweet Basil {Ocymum basilicum). 



Fig. 152 Vertical section of flower of Ocymum, much enlarged. 



s 



