652 



THE LABIATE FAMILY. 



Fig. 782. 



and sometimes all four, project beyond 

 the corolla. 



On the edges of woods, roadsides, and 

 hilly pastures, especially in limestone 

 districts, throughout Europe and Rus- 

 sian Asia, except the extreme north. In 

 Britain, spread over England, Ireland 

 and western Scotland. Fl. summer. 



VI. CALAMINT. CALAMINTHA. 



Branching, erect, or ascending herbs, with ovate, toothed leaves, and 

 purplish flowers in axillary cymes, sometimes forming dense whorls, 

 sometimes loose and paniculate. Calyx tubular, with 13 longitudinal 

 parallel ribs (two between the midribs of the lower teeth, and one only 

 between the midribs of the upper teeth), and 5 pointed teeth ; the 3 

 upper teeth more or less connected at the base into an upper lip ; the 

 mouth more or less closed with hairs. Corolla-tube usually longer than 

 the calyx ; the upper lip erect and slightly concave ; the lower one 

 spreading, with 3 broad lobes. Stamens 4, in pairs under the upper lip, 

 the outer ones the longest but not spreading beyond the corolla. 



A considerable genus, spread over the temperate regions of the 

 northern hemisphere, both in the new and the old world. It is dis- 

 tinguished from Thyme and Marjoram chiefly by the longer corolla 

 and the stamens not diverging, from all the following by the arrange- 

 ment of the ribs or nerves of the calyx. 



Annual. Calyx-tube enlarged at the base on the lower side. 



Flowers in axillary whorls of six 1. Field C. 



Perennials. Calyx-tube not enlarged at the base. 



Cymes axillary, many-flowered, forming dense whorls, with 



linear bracts as long as the calyxes 3. Hedge C. 



Cymes loose, axillary, and few-flowered or loosely paniculate. 



Bracts small, or none besides the floral leaves .... 2. Common C, 



