132. LABIAf AE. 177. 



11. Filaments united at base into a closed tube. 6 COLEUS. 



Filaments free, or if united, tube slit open. 12. 



12. Calyx subequally 5 toothed. Lower pair of filaments united. 



4 SYNCOLOSTEMON. 



Calyx unequally 5 toothed (upper larger), or if equally 5- 



toothed, then all filaments free. 13. 



13. Upper tooth of calyx much larger than others, suborbicular, 



very broadly ovate or oblong. Lower lip of corolla con- 

 cave. 3 ORTHOSIPHON. 

 Calyx usually 2 lipped, 5 toothed. Teeth subequal or upper 

 widest. Lower lip of corolla, entire boat shaped. 



5 PLECTRANTHUS. 



14. Stamens 2. Connective prolonged. 14 SALVIA. 



Stamens 4. IS. 



15. Corolla more or less regular or 2 lipped with a flat upper lip. 



(Satureieae). 16 

 Corolla distinctly 2 lipped with a convex upper lip. 



(Stachyeae) 17. 



16. Calyx 10 nerved. Corolla subequally 4 lobed. Stamens equal, 



erect, distant. 12 MENTHA. 



Calyx 13 — 15 nerved. Corolla 2 lipped. Stamens ascending. 



13 SATUREIA. 



17. Stamens included in the tube. 15 ACROTOME. 

 Stamens exserted. 18. 



18. Style subequally bifid at the apex. 16 STACHYS. 

 Style branches very unequal, posterior shorter. 19. 



19. Upper lip of corolla much longer than lower. 



19 LEONOTIS. 

 Lower lip of corolla about as large as upper 2O. 



20. Calyx 6—10 toothed. 17 LEUCAS. 

 Calyx 5 toothed. 18 LASIOCORYS. 



1. BECIUM Lindley. (Grassveld herbs.) 



obovatum N.E.Br. Coast and Midlands. Common. 

 obovatum var galpini. Zululand and coastbelt. 



Z. OCIMUM L. '-uQabukulu." 



suave Willd. Coastbelt and Zululand. Grassveld. 



3. ORTHOSIPHON Bth. (Margins of bush and grassveld.) 



1. macrophyllus N.E.B. Drakensberg. 



2. latidens N.E.B. Umvoti. 



3. macranthus Guerke. Drakensberg, Upper Tugela 



4. gerrardi N.E.B. Ingoma. Rocky ground. 



5. stenophyllus Guerke. Midlands and Drakensberg. 



6. teucriifolius N.E-B. Drakensberg. 



7. pretoriae Guerke. Midlands and Drakensberg. 



8. wilmsii Guerke. Coast and Midlands. 



9. inconcinnus Briq. Camperdown. 



