154 SELECTION OF PLANTS. 



It is usually treated as an Annual, turned into the open 

 border in May. In favourable seasons it will produce a 

 i'ew seeds, or it may be increased by dividing the roots. 



473. LUPINUS ORNATUS. Sky-blue Perennial Lupine. 



Class 17th. Diadelphia Deeandria. 



A hardy Perennial, flowering from May to November ; 

 this is one of the finest of the species. Nothing can sur- 

 pass the lovely azure blue flowers. Native of Columbia. 



474. BLACKWELLIA PADIFLORA. Bird Cherry-flowered 



Blackwellia. 



Class 6th. Hexandria Tetragynia. 



A hardy greenhouse plant, growing well in the open 

 border during the summer ; very handsome when in flower, 

 and increasing freely by cuttings. 

 It is a native of China. 



475. PENTSTEMON VENUSTUM. Pretty Pentstemon. 



Class 14th. Didynamia Angiospermia. 



This plant should be treated as a Biennial ; it is increased 

 freely either by seed or cuttings. It flowers in great pro- 

 fusion during the months of July, August and September. 



It is a native of North America. 



It is necessary to remark, that it is indispensable that 

 the seed should be sown in a cold frame, for an attempt to 

 raise it in heat will be quite fruitless. 



476. CLEOME SPECIOSISSIMA. Showy Cleome. 



Class 6th. Hexandria Monogynia. 



This is a tender Annual, and extremely beautiful ; it is 

 more adapted for the border in the summer, than in the 



