104. ACANTHAGE.^. [1. Thunbergia. 



Cymules usually in axillary cymes. One 

 of the unequal bracts large. Fls. rose or 



purple 30. Dicliptera. 



2. Ovules 3-many in each cell. Corolla 2-lipped. St. 2:— 



Flowers small in sympodial racemose cymes . . 31. Androgf aphis. 

 Flowers large red in terminal thyrses . . .32. Fklogacauthus. 

 C. Corolla with a single 3-lobed spreading lower lip, upper 

 obsolete. Lobes inflexed imbricate in bud. Ovules 

 2 in each cell. Corolla-tube often horny : — 

 Cor.-tube ovoid or globose. Anther below apex of 



filament 33. Blepkat-ig. 



Cor.-tube subcampanulate. Anther at apex of filament 3i. Acanthus. 



1. THUNBERGIA, L.f, 



Climbei's, rarely erect, with palmiuerved often ang-led and cordate 

 leaves, axillary or racemed large or mod.-sized flowers and large 

 bracteoles enclosing the flower buds. Calyx small annular, usually 

 10-16-toothed. Corolla with a ventricose curved tube, usually oblique 

 mouth and 5 rounded petals twisted to left in bud. Stamens didy- 

 namous, anthers 2-celled, cells sometimes spurred at base, not 

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

 globose with a flat hard sword-shaped beak. Seeds 2 in each cell, 

 glabrous, often hollowed at the base, sometimes scaly. 



I. Climbers:— 



A. Flowers axillary : — 



1. Flowers white: — 



Calyx-teeth lanceolate, "Oo-'IS" I. fmgrans. 



Calyx-teeth filiform hairy. •2-'3" [2. tomentosa.'] 



2. Flowers mostly yellow with dark throat. Garden species. 6. alata. 



B. Flowers racemed (sometimes also in upper axils) : — 



1. Flowers blue : — 



Leaves broad much dentate 5-7-nerved, pubescent or 



scabrid 3. g randiflora. 



Leaves narrow 3-nerved, glabrous. Garden species . . .5. laurifolia. 



2. Flowers orange-scarlet -4. coccinea. 



IT. Erect shrub. Flowers purple with white tube . . . .7. erecta. 



1. T. fragrans, Roxh. 



A slender twiner with glabrous or pubescent branches, ovate or 

 oblong, sparsely toothed leaves l-3'o" long with straight, cordate or 

 hastate base, and white floAvers 1"5" long, solitary or paired in the leaf 

 axils. Calyx-teeth 14-20 lanceolate or subulate -Qo-OT long in 

 flower, equalling or slightly exceeding the tube. Capsule 'To-l' with 

 4 rounded excavate seeds. 



The type occurs in the Sikkim Tarai and probably therefore in Purneah. In it 

 the flowers are fragrant, the capsule glabrous and shining. 



Yar. laevis, Clarke. 



Glabrous or grej'-puberulous or (in my specimens) distinctly pubescent on 

 young leaves, pedicles, bracteoles and calyx. Pedicels often 2, sometimes 3 in an 

 axil, 1" to (rarely) 3", much thickened upwards in fruit (Clarke) or uniform (in 

 some of my specimens), flowers not fragrant, capsules grey-puberulous with the 

 calyx teeth up to ■!" and hardened. 



Southern area, frequent. Singbhum, chiefly in Porahat ! Angul ! Fl. Oct.- 

 Nov. and sometimes to March, fruiting soon after. 



Yar. Yestita, Nees. See remarks under T. tomentosa, 



665 



