478 LABIATE. 



ttttt Corolla Z-lipped, lips unequal; calyx 5 10- 

 toothed ; stamens shorter than the tube of the corolla. 



16. MARRUBIUM (White Horehound). Calyx with 

 5 or 10 teeth, the throat hairy ; tube of the corolla 

 longer than the calyx ; upper lip straight, very narrow, 

 deeply 2 -cleft, lower 3-lobed. (Name of doubtful 

 origin.) 



tttttt Corolla 2-lipped, the lips unequal; calyx 

 %-lipped. 



17. CALAMINTHA (Calamint, "Wild Basil, Basil Thyme). 

 Calyx 1 3-nerved, tubular, swollen underneath ; upper 

 lip 3-cleft ; lower 2-cleft, throat mostly hairy ; tube of 

 the corolla straight ; upper lip nearly plane, lower 

 spreading, 3-cleft. (Name, the Greek name of some 

 allied plant.) 



18. MELITTIS (Wild Balm). Calyx bell-shaped, much 

 wider than the tube of the corolla, variously lobed ; 

 upper lip of the corolla nearly flat, entire, lower with 3 

 rounded, nearly equal lobes. (Name from the Greek 

 melittaj a bee, from the quantity of honey contained in 

 the tube.) 



19. PRUNELLA (Self-heal). Calyx flattened, and 

 closed when in fruit ; filaments 2 -forked. (Name from 

 a German word for the quinsy, for which complaint it 

 was considered a specific.) 



20. SCUTELLARIA (Skull-cap.) Upper lip of the 

 calyx bulged outward about the middle, and finally 

 closing down like a lid over the fruit ; tube of the 

 corolla much larger than the calyx. (Name from the 

 Latin scutella, a little cup, which the calyx somewhat 

 resembles.) 



1. LYCOPUS (Gipsy-wort). 



1. L. Europceus (Common Gipsy-wort). The only 

 British species. On the banks of rivers and ditches, 

 frequent. An aquatic plant, with erect, scarcely branched 



