390 cix, ACANTHACE^. (C. B. Clarke.) [Thunbergia. 



f Placenta not rising elastically from the base of the capsule. 

 [[ Anther-cells placed one much higher than the other. 



Anther-cells muticous, bracts in opposite pairs, valvate . 48. PEBISTEOPHE. 



Anther-cells minutely spurred at base 38. JTJSTICIA. . 



Anther-cells apiculate, scarcely spurred at base . . . 39. ADHATODA. 



Anthers muticous. Flowers clustered. Corolla long . 40. RHINACANTHTJS. 



Anthers muticous. Flowers thyrsoid. Corolla not large 41. DIANTHEEA. 



^[^[ Anther-cells parallel, subequal. 



Bracts small, narrow. Corolla small 42. PTYSIGLOTTIS. 



Corolla-tube ovoid, constricted in the throat .... 43. SPHINCTACANTHUS. 



Bracts large, imbricate. Corolla-tube narrow, long . . 44. ECBOLITJM. 



Bracts small. Corolla-tube elongate .. ........ 45. GEAPTOPHYLLUM. 



I. THUNBEROI A, Linn. /. 



Scandent. Leaves often cordate, hastate or angular. Flowers axillary, 

 1-2-nate, or racemose; bracts at the base of the pedicels leaf -like ; bracteoles 

 large, margins coherent at least when young. Calyx small, annular, 10-16- 

 toothed, or obscure. "Corolla conspicuous ; tube ventricose, curved ; limb 

 oblique ; lobes 5, rounded, twisted to the left in bud. Stamens 4, didynamous 

 near the base of the^ corolla-tube ; anthers 2-celled, cells parallel, oblique, 

 spurred or not at the base. Disc cushion-shaped or annular. Style long ; 

 stigma funnel- shaped, 2-lobed or subentire, or style 2-fid with capitate 

 stigmas ; 'ovules 2 in each cell, collateral. Capsule globose, suddenly 

 narrowed into a barren sword-shaped beak. Seeds 2 in each cell, ovoid or 

 dorsally compressed, not hairy, base plane or excavate, funicle minute or 

 conic. Species 30, in Africa, Asia, and N. Australia. 



Sect. 1. Euthunberg ia. Flowers axillary. Calyx 10-16-toothed. 

 Seeds ovoid, base excavate. 



1. T. fragrans, Eoxb. Cor. PI. i. 47, t. 67, and Fl. Ind. iii. 33; leaves 

 ovate or oblong acute, calyx-teeth in flower lanceolate hardly longer than 

 the tube, capsule glabrous. Lamk. III. t. 549, fig. 2; Wall. Cat. 767, type 

 sheet; Nees in Wall. PI. As. Ear. iii. 77, 78, and in DC. Prodr. xi. 57; 

 T. Anders, in Journ. Linn. Soc. ix. 448; Elurz For.Fl. ii. 240. T. javanica, 

 Gaertn. f. Fruct. iii. 22, t. 183 ; JBlume Sijd. 806 ; Nees in DC. I. c. 56. 

 T. scandens, Pers. Syn. ii. 179. T. volubilis, Pers. Syn. ii. 179; Nees in 

 DC. 1. c. 59. T. angustifolia, Ham. ; Nees in Wall. PI. As. Ear. iii. 78, 

 and in DC. I. c. 56. T. Eoxburghia, Nees in Wall. PL As. Ear. iii. 78, 

 and in DC. I. c. 58. T. subsagittata, Blanco FL Fil. 518. T. arnhemica, 

 F. Muell. Fragm. Phyt. Austral, ix. 73. 



Throughout INDIA, alt. 1-4000 ft., from the Himalaya Terai to CEYLON and 

 Tenasserim; ascending to 5-7000 ft. DISTEIB. Malaya to the Philippines and 

 N. Australia. 



Stem slender, retrorsely hairy or glabrate. Leaves 2-3 by ^-1| in., obtuse, base 

 cordate or hastate, toothed, mature glabrate ; petiole ^-1| in. Pedicels 1-3 in., 

 1 rarely 2 in each axil ; bracteoles % in., broadly falcate-oblong, subacute. Calyx in 

 flower | in., divided half-way down into 12-16 teeth, nearly glabrous, in fruit 3 in. 

 Corolla 1| in., pure white, fragrant. Anther-cells elliptic, acute, base unappendaged. 

 Ovary glabrous ; style funnel-shaped, 2-lipped. Capsule |-1 in., glabrous, shining. 

 Seeds ^- in., rugose. The typical T. fragrans of the Bengal Terai is considered by 

 T. Anderson, from the pure white of its fragrant flowers, the most charming of Bengal 



