-A Key to the Labiatae of Chin 



Plectranthus, L'Herit. ; Fl. Brit. Ind. 



Calyx with 5 nearly equal teeth 



3. Corolla tube 4-6 times as long as the calyx 

 Corolla tube not more than twice as long as 



the calyx 



4. Flowers 

 Flowers paniculate 



2. macranthu 



4. angustifolh 

 5. Bulky am 



12. Teeth of fruiting calyx | of its tube 

 Tube of fruiting calyx equal to the teeth 



13. Leaves cordate 

 Leaves not cordate . 



14. Flowers racemose . . .12. 

 Flowers paniculate or in axillary cymes 



15. Calyx teeth, at least in fruit, 4 times tl 

 Calyx tube not more than twice the teeth 



17. Corolla widely £ 

 Corolla nearly c 



: the base 



- quite cylindric at the bas< 



* P. rubescens, Hemsl., is a glabrous-leaved form < 

 scabrous- and dcnscK [>: 



intermediates. The shape of the corolla, calyx, and le 

 calyx nun. not 5 mm. long, and its , . 1 



8. discolor, 

 leucophyllui 



sculponiatu: 



13. rubescens* 

 14. phyllopodu. 



ting habit, its 



