Mint Family 339 



Flowers solitary in the axils. 



Calyx gibbous on the upper side. 2. SCUTELLARIA. 



Calyx not gibbous on the upper side. 



Trailing herbs ; flowers small. 8. MICROMERIA. 



Shrubby; flowers large. 7. SPHACELB. 



Flowers not solitary. 



Calyx regular or its teeth nearly equal. 



Corolla slender curved; stamens fully twice the length of the corolla. 



1. TRICHOSTEMA. 

 Corolla nearly regular. 

 Flower-whorls axillary. 



Stamens 4. 12. MENTHA. 



Stamens 2. 11. LYCOPUS. 



Flowers in terminal bracteate heads. 9. MONARDELLA. 



Corolla evidently bilabiate. ,~. 



Stamens included in the corolla-tube. 3. MARRUBIUM. 



Stamens exceeding the corolla-tube. 



Lower pair of stamens the longer. 4. STACHYS. 



Stamens nearly equal. 10. KOELI.IA. 



Calyx bilabiate or its teeth unequal. 



Upper corolla-lip erect; filaments short; the connective transverse, the 



lower portion evident. 5 SALVIA. 



Upper corolla-tip spreading; connective nearly continuous with the 

 filament, the lower portion not evident or indicated by a tooth. 



6. RAMONA. 



1. TRICHOSTEMA L. BLUE-CURLS. 



Annual or perennial strong-scented herbs or rarely 

 shrubby, with lanceolate, oblong or linear, entire or 

 slightly repand leaves, and small or middle-sized, usu- 

 ally blue or purple flowers, paniculate or in axillary 

 loose or dense clusters. Calyx campanulate, very un- 

 equally 5-lobed. Corolla-tube slender, exserted or in- 

 cluded, the limb somewhat oblique and deeply 5-cleft 

 into oblong more or less declined segments. Stamens 4, 

 didynamous, ascending, curved, the anterior pair longer ; 

 filaments filiform, spirally coiled in the bud, long 

 exserted ; anther-sacs divaricate, more or less confluent 

 at the base. Ovary deeply 4-lobed ; style 2-cleft at the 

 summit. 



1. T. lanceolatum Benth. Strong-scented annual, simple or 

 branching from near the base, 1.5-3 dm. high, very leafy, herbage 

 cinereous or villous-pubescent and minutely glandular; leaves 



