380 LABIAT.fi 



Several species of Sage {Salvia) are also cultivated for the sake of 

 their brilliantly coloured blossoms. 



* Stamens 4, distant, the two upper shorter ; nutlets free, smooth or 

 nearly so 

 t Corolla subregular ; stamens spreading 



1. Mentha. — All four stamens perfect. 



2. Ltfcopus. — Two upper stamens aborted. 



tt Corolla 2 -lipped 



3. ORfGANUM. — Calyx with 5 equal teeth ; stamens diverging. 



4. Thymus. — Prostrate ; leaves amall ; calyx 2-lipped ; stamens 

 diverging. 



5. Clinop6dium. — Corolla-tube straight ; stamens converging at 

 their tips. 



*6. MELfssA. — Corolla-tube curved ; stamens converging at 

 their tips. 



** Stamens 2 ; anthers distraciile ; nutlets free, smooth or 

 nearly so 



7. Salvia. — Calyx and corolla both 2-lipped. 



*** Stamens 4, the two upper longer ; nutlets free, smooth 



8. N£peta. — Calyx with 5 nearly equal teeth ; corolla with flat 

 upper lip. 



**** Stamens 4, parallel, the 2 upper shorter ; nutlets free 

 t Calyx 2-lipped 



9. Scutellaria. — Calyx closing over the fruit ; 2 lower anthers 

 i-chambered. 



10. Prunella. — Calyx closing over the fruit; anthers all 

 2 -chambered ; filaments forked. 



1 r. Melittis.— Calyx inflated ; anthers exserted. 



ft Calyx with 5 — 10 equal or sub-equal teeth 



12. Marrubium. — Calyx tubular, 1 o-tcothed ; anthers included. 



13. Stachys. — Calyx sub-campanulate, with 5 equal teeth; 

 anthers smooth, bursting lengthwise. 



14. Galeopsis. — Calyx sub-campanulate, with 5 prickly teeth ; 

 anthers fringed, bursting transversely. 



*i5. Leonurus. — Calyx sub-campanulate, with 5 prickly teeth; 

 antfiers smooth, warty, bursting lengthwise. 



16. Lamium. — Calyx sub-campanulate, 5-toothed ; anthers hairy, 

 bursting lengthwise. 



