79. ACANTHACE&. [I. Thukbkbgu 



Bracts paired unequal, one or both longer 

 than calyx, fascicled in reduced axillary 

 and terminal dense cymes. . . . 15. Dielipt era. 



Bracts paired unequal, one or both longer 

 than calyx, 2-4 prs. only, terminal . .16. Peristrophe. 



Bracts and bracteoles minute T x 5 "long or 0. 17. Ehinacanthvx. 



3. Ovules 3-10 in each celL Corolla 2-lippecL 

 Stamens 2. 

 Herbs or undershrubs. Corolla small with 



slender tube . .... 18. Andrographit. 



Shrub with showy curved brick-red corolla . 19. Phlegaeanthut. 

 TO. Calyx distinct. Corolla 1-lipped only, the 

 upper lip obsolete. 



Herbaceous. Ovules 2 in each cell . . .20. Blepharix. 



1. Thunbergia L. f . 



Climbers with axillnry or racemed flowers, and large 

 bracteoles enclosing the flower buds. Corolla large with a 

 ventricose curved tube and 5 rounded petals. St. 4 didyna- 

 mous. Disc conspicuous. Ovary cells 2-ovuled. Capsule 

 very characteristic, being globose with a flat hard sword-shaped 

 beak. 



1. T- fragrans. Roxb. Var. laevis. 



A slender climber with ovate or oblong leaves 1-3* by 

 §-l|", lower with cordate or hastate base, and white flowers 

 1 \" long solitary or paired in the leaf axils. Calyx teeth 

 14-20 lanceolate f V A • 



Singbhum on Porahat plateau. Fls. Fr. Oci.-Not 



Glabrous, puberulous or hairy. Pedicels 1-2 7 thickened upwards in 

 fruit. Fls. not fragrant (they are fragrant in the type). Calyx-teeth 

 hard in fruit and then £" long. Fruit puberulous depressed globose with 

 4 rounded excavate seeds. Beak with grooved edges. 



2. T. tomentosa, Wall. 



Similar but calyx-teeth in flower filiform much longer than the tube 

 often £", hairy, and capsule villous. Fla. 1£". 

 Chota Nagpur, Protn. 



447 



