178 ACANTH.ACE&. [TH:NBEHGHA- 



Cor-lobes imbricate in bud : 

 Ovules 3-8 in each cell, capsule nor- 

 mally 6 or more-seeded : 

 Capsule compressed at right angles to 

 the septum ; seeds ovoid, hardly 

 compressed : 



Flowers in panicled often 1 -lateral 

 racemes, without axillary barren 



branches (cladodes) . . 15. ANDROGRAPHIS. 



Flowers in spikes in the midst of 



cladodes . . .16. HAPLANTHUS. 



Capsule subterete, seeds much com- 

 pressed . . . . .17. PHLOGACANTHOS. 

 Ovules 2 or rarely 1 in each cell : 

 Corolla-lobes 5, subequal : 



Calyx 4-part., the two opposite 

 outer segments much longer than 

 the inner ; perfect stamens 2 . 18. BARLERIA. 

 Calyx 5-part., segments subequal ; 



stamens 4, all perfect . . 19. ASYSTASIA. 

 Corolla distinctly 2-lipped : 



Stamens 4 ..... 20. 1 EPIDAGATHIS. 

 Stamens 2 : 



Placentas remaining attached to 

 the valves of the capsule : 

 A.nther-cells parallel, sub- 

 equal ; bracts large, imbri- 

 cate ; cor-tube long, 

 . narrow . .21. ECBOLIUM. 



Anther-cells placed one higher 



up than the other : 

 Anther-cells (at least the 

 lower) with a white basal 

 spur-like appendage (api- 

 culate in J. Adhatoda) . 22. JUSTICIA. 

 Anther-cells muticous . 23. PERISTROPHE. 

 Placentas separating elastically 

 from the base of the cap- 

 sule : 



Flowers in 1-lateral spikes . 24. RTJNGTA. 

 Flowers crowded in axillary 

 cymes towards the end of the 

 branches . . . .25. DICLIPTEBA. 



1. THUNBERGIA, Linn, f.; PI. Brit. Ind. iv, 390. 



Climbers. Leaves opposite, oflen cordate hastate or angular. 

 Flowers axillary, solitary or in pairs or racemose, bracts at the base 

 of the pedicels leaf -like ; bracteoles large, the margins cohering, at 



