122 TETRADYNAMIA SILIQUOSA. Siliapis, 



six feet. Leaves radical and caulino, petioled, erect, obovate, 

 cuneate, serrate-dentate, .slightly rugose, and destitute of pu- 

 bescence, those about the top of the plant are sessile, linear- 

 lanceolate, recurved, and entire. Petioles generally colour- 

 ed, smooth, nearly round, and deeply channelled. Racemes 

 terminal, erect. Flowers numerous, small, of a bright yellow. 

 Calyx expanding, longer than the claws of the petals. Pe- 

 tals with broad claws, and obovate, spreading lamina. Sta- 

 mem, the four larger considerably longer than the claws of 

 the petals. Siliques short-peiluncled, expanding, linear, ob- 

 scurely four-sided ; beak short and subulate. Seeds from ten 

 to twenty in each cell, round oval, obscuiely pitted, dark 

 brown. 



7. S. rugosa. R. 



Annual. Radical and cauline leaves obovate, and rugose, 

 with the posterior margin laciniitte, and the anterior one den- 

 tate; nerve very broad, and dividing above the middle like 

 the ribs of a fan ; floral leaves linear and entire. SHiqnes ex- 

 panding, torose, short, subulate, beaked. Seeds round, ches- 

 nut-coloured. 



The seeds of this very stately species were sent from Ne- 

 pal by Dr. Buchanan to this garden, where t^ie plants grow 

 luxuriantly during the cold season, and ripen their seed in 

 March. Dr. Buchanan remarks that he received the seeds 

 from Thibet. 



Stem scarcely any till the plants begin to blossom, when it 

 shoots up quickly, to four, tive, or six feet in height, with an 

 expanding, ramous branch from the axill of each leaf, all 

 round and smooth. Leaves, the radical ones are petioled, very 

 rugose, and disposed somewhat spirally, which disposition is 

 particularly conspicuous while young ; the cauline leaves are 

 shorter petioled, or even sessile; the posterior margins of both 

 the radical and cauline leaves variously and deeply jagged; 

 the anterior margin dentate; the tierve is remarkably com- 

 pressed, ribbed, and broad, armed w ith a few inoffensive bris- 



