NEW AND RARE PLANTS. 113 



being potted a twelvemonth previously, they become established^ 

 and better enabled to support an accelerated growth and premature 

 development of bloom. If, therefore, we are anxious to obtain a 

 good bloom of forced Roses, and have plants that have been a twelve- 

 month or more in pots, they should certainly be taken in preference, 

 for the purpose, and the fresh-potted ones be allowed to grow on for 

 the natural season of flowering. Presuming, then, the plants about 

 to be forced have been grown one season in pots, we will proceed 

 with our subject. 



Heating Forcing-house. 



The various systems of heating horticultural buildings now in 

 vogue have been frequently descanted on in the gardening periodicals, 

 and it would be out of place to speak of them here, except in general 

 terms. Heating by hot-water, in its various modes of application, 

 which have now become general, is universally acknowledged to be 

 preferable to the old flue system, and in no instance more so than for 

 forcing Roses : nevertheless, they will force well upon the old flue 

 system. As, however, as must be apparent, syringing should be 

 more freely resorted to here; and a pot or two of water, poured 

 down on the floor of the house every morning, is necessary, to keep a 

 moist atmosphere, which is very favouiable to forced Roses, and, 

 at the same time, noxious to the red spider, which it is not im- 

 possible should appear under the flue system of heating. Arnott's 

 stove is also used by some, and is found to answer exceedingly 

 well. 



[We again recommend the pamphlet to our readers as well de- 

 serving to be possessed. — Conductor.] 



PART II. 



LIST OF NEW AND RARE PLANTS. 



Blanim'ohdia marqinata. Rough-edged. (Bot. Reg. 18.) Lilinceae. 

 Ilex.mdiia Monogynia. A native of Van Dieman's Land, where it grows 

 abundantly. It is in the collection of Messrs. Osborne ami Co., of Fulham, near 

 London, where it bloomed last year in the greenhouse. It is an inhabitant of 

 wet places, and, consequently, in the growing season, requires a liberal supply 

 of water. The flowers are produced in a long conical shaped raceme, of a 

 deep rich red-copper colour outside, and yellow within, and at the edges of the 

 petals. Il is a very interesting and pretty flowering species. There have been 

 discovered two other new species. In Van Dieman's Land, viz., B. Backhousii, 

 which produces its flowers in a large corymbous head of more than twenty in 



Vol. XIII. No. 147. k 



