-A Key to the Labiatae of Chii 



Dracocephalum, Linn. ; Fl. Brit. Ind. iv, 664. 



. 1. tangutk 



5. Floral leaves spinoso-serrate at the base ; 

 flower spike interrupted 

 Floral leaves crenate at the base ; flower 

 spike dense 



3. Moldavu 

 heterophyllw, 



Flowers few together ; upper leaves stalked, 

 serrate, usually ovate cordate . 



Flowers in dense verticils ; upper leaves 

 usually sessile, oblong, finely serrate or 

 crenate, usually truncate or acute at 

 the base ..... 



8.. Calyx lobes linear, hair-pointed 

 Calyx lobes lanceolate acute 





7. 



8. utticifoliitm. 



9. Middle and upper leaves sessile 

 Middle and upper leaves with slend 



er stalks 



13. 



10. Bracts lanceolate 

 Bracts linear 





.' 9. sibiricum. 



11. Calyx segments narrow, subulate 

 Calyx segments narrow-lanceolate 





. 10. Veitchii. 



12. Corolla 2\ times the calyx . 

 Corolla if times the calyx . 





. 11. Wilsoni. 

 12. coerulescens. 



13. Corolla 3 times the calyx . 

 Corolla twice the calyx 





1 - 

 14. tcnmflonim. 



1. Dracocephalum tanguticum, 



Maxim. 



Mel. Biol, xi, 307. 



Kansu : Przewalski. 



Szechuen : Tongolo, Soulie, 243 ; Ta-chi( 

 W. China, 6000-7000 ft., Wilson, 4362. 



