312 



XLIX. TROP^OLE^E. 



Nasturtium. 



Carpel cut 



vertically (mag.). 



Nasturtium. Flower seen in profile. 



Nasturtium (Trop<rolum majut) 

 Flower seen in front. 



Nasturtium. 



Carpel cut 



transversely (mag.). 



Nasturtium. 

 Vertical section of flower. 



Nasturtium. 

 Peduncle and calyx. 



Succulent, prostrate, glabrous or twining HERBS with watery juice ; root usually 

 tuberous. Primordial LEAVES opposite, 2- stipulate ; the others alternate, exstipulate, 

 petioled, simple, peltate, entire or lobed, or deeply palmipartite with entire or cut 

 lobes, sometimes pellucid-dotted. FLOWERS $ , irregular, axillary, long-peduncled. 

 CALYX coloured, persistent, 5-fid, 2-lipped, the upper lip 2-fid, the lower 3-fid and pro- 

 longed at the base into a hollow spur, aestivation imbricate or subvalvate. PETALS 

 inserted at the bottom of the calyx, equal and alternate with the sepals, or fewer, 

 imbricate in aestivation, the 2 upper inserted on the throat of the spur, and exterior, 

 spreading, and different from the 3 lower, which are usually smaller and sometimes 

 0. STAMENS 8, unequal, inserted on the receptacle, surrounding the ovary ; filaments 

 subulate, free ; anthers introrse, basifixed, erect, dehiscence longitudinal. OVARY 

 free, sessile, 3-lobed, 3-celled ; style central, filiform, divided at the top into three 

 branches terminated by a minute stigma; ovules solitary, pendulous from the top of 

 the -inner angle of each cell, anatropous. FRUIT of 3 indehiscent dry or spongy- 



