Aci'ocephalics.] 



CII. LABIAT.t: (baker). 



leaves ; special flower-bracts membranous 

 usually shorter than the flowers. 



A few additional species in Tropical Asia, Madagascar, a 

 Head solitary, terminal ...... 



Heads 1-3 at the end of the leafy branches. 

 Leaves linear 

 Leaves oblong 

 Heads few, laxly corymbose. 

 Leaves linear 

 Leaves lanceolate 

 Leaves oblong. 

 Peduncles short . 

 Peduncles long . 

 Heads many, densely corymbose. 

 Basal bracts blue-purple. 



Basal bracts ovate ...... 



Basal bracts ovate-lanceolate. 



Bracts blue-purple at the tip . 



Bracts blue-purple at the base .... 



Basal bracts pale towards the base. 

 Leaves linear or lanceolate. 



Heads cylindrical ...... 



Heads globose. 



Pube.scence of peduncle dark blue . 

 J*ubescence of peduncle grey. 

 Leaves ascending. 



Hairs of peduncle long spreading . 

 Hairs of peduncle very short. 



Leaves thick and strongly veined 

 Leaves thinner and not strongly veined 

 Leaves detlexed. 



Leaves linear, small 

 Leaves linear, long 

 licaves lanceolate 

 Leaves oblong or oblong-lanceolate 

 Leaves not at all coriaceous 

 Leaves subcoriaceous. 



Leaves very rugose beneath 

 Leaves not rugose beneath 

 Basal bracts green and foliaceous to the base 

 Leaves linear 

 Leaves linear-lanceolate 

 Leaves lanceolate. 



Leaves glabrous in the upper surface. 



A'eins of under surface of the leaves prominent 

 Veins of under surface of leaf not raised 

 Leaves scabrid on the upper surface . 

 Leaves hairy on the upper surface. 

 Basal bracts few, inconspicuous. 

 Hairs of stem sparse, spreading . 

 Hairs of stem dense, adpressed . 

 Basal bracts several, sharply rcfloxcd. 

 Leaves pubescent .... 



Leaves villous ....•• 



or rigid, ohovate-cuneate 



id \atal. 



1. A. monocephalus. 



2. A. centratheroides. 



3. A. qnleopsifoliufi. 



4. A. (/racilis. 



5. A. sKcciscBfoliu*. 



6. A. ci/lindracewi. 



7. A. oliffocephalut. 



8. A. porphyrophylltu. 



9. A. Schiceinfarthii. 

 10. A. iododermis. 



11. A. Cam pi cola. 



12. A. pO(ji}t'anus. 



13. A. polifirich us. 



14. A. veno.sus. 



15. A. coendcKS. 



16. A. lilacinus. 



17. A. laqoensis. 



18. A. Buettneri. 



10. A. callianthus. 



20. A. j)i'<Talfu.s\ 



21. A. fipj/ioideji. 



22. A. Heudelotu. 



23. A. Laurent a. 



2t. A. re/iruldfiis. 



25. A. dixsifi/olius. 



26. A. merhoicianiu. 



27. A. //V/rr(7.vcAiJ. 



28. A. serirrus. 



29. A. hjiploides. 



30. A. masniantti. 



