3 78 ACANTHACEM. [Thjnbbbgia. 



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. Phlogacanthus. 



Ovules 2 or rarely 1 in each cell : — 

 Corolla-lobes 5, sub equal : — 



Calvx 4-part., the two opposite 

 outer segments much longer than 

 the inner ; perfect stamens 2 . 18. Barlerta. 

 Calyx 5-part., segments sub equal ; 

 stamens 4, all perfect . . 19. Asy stasia. 



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. Ecbolidm. 



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. Peristropke. 



Placentas separating elastically 

 from the base of the cap- 

 sule : — 

 Flowers in 1-lateral spikes . 24. Eungia. 

 Flowers crowded in axillary 

 cymes towards the end of the 

 branches . . . .25. Dicliptera. 



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



Climbers. Leaves opposite, oflen cordate hastate or ansrular. 

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

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



