286 GARDEN PLANTS. PART IT. 



of a bright red colour. Two or three are natives of this country, 

 and look pretty in the way of variety amongst other potted 

 plants. 



HYPOGYNOUS EXOGENS. 



Viola. 



V. tricolor HEARTSEASE PANSY. Though a perennial, the 

 Heartsease must, in this country, be cultivated as an annual, 

 and raised fresh from seed each Cold season, for it is only in 

 very rare cases that it can be preserved through the Hot and 

 Kain seasons. The seed should be sown in October, and the 

 young plants, when having formed about six leaves, be pricked 

 out into small pots, one in each. They should be removed 

 carefully, so as to disturb the soil as little as possible, for some 

 of the seeds do not germinate till a long time after others. The 

 Heartsease likes the shade and plenty of water, and a soil well 

 enriched with old cow-manure. It is important, however, that 

 the soil should be rendered of an open nature, or the plants are 

 apt to turn yellow and sickly. 



The following mode of treating the plant is given by Sir J. 

 Paxton : 



" When grown in pots, train the plant upon a single stem, until 

 it has attained the height of one foot, or eighteen inches (which it 

 will readily do), then pinch off the extreme points ; it will throw 

 gut side branches in profusion, and will have a strikingly pleasing 

 appearance." * 



The Heartsease, however, is a florist's flower, and plants 

 raised from seed may probably, with all the trouble bestowed 

 upon them, turn out worthless, particularly if care has not been 

 taken to sow seed saved from the finest sorts. 



BKASSICACE^E. 



Matthiola. 



M. annua TEN-WEEK-STOCK. Stocks thrive vigorously enough 

 in the vicinity of Calcutta, till they are just about to blossom, 

 when they all but invariably are infested with a minute kind ot. 

 * ' Magazine of Botany/ vol. iii. p. 6. 



