CATALOGUE OF GREENHOUSE PLANTS. 231 



Primula. In this genus are embraced all the varieties of 

 the Primrose, Polyanthus, Auricula, Cowslip, Oxlip, &c. 

 already inserted in our Biennial and Perennial catalogues. 

 The flowers, which appear early in Spring, are mostly 

 sweet-scented, and of various colours, red, white, yellow, 

 lilac, purple, crimson, &c., which in some are beautifully 

 variegated. The above are natives of England; besides 

 which are two varieties, white and pink, natives of China, 

 producing umbels of flowers ; from January to May. 



Pyrus Japonica alba, or Cydonia Japonica. One of the 

 earliest flowering dwarf shrubs of the garden, producing 

 beautiful blush flowers ; there is another variety, which pro- 

 duces scarlet blossoms, already described in our catalogue 

 of shrubs us an evergreen, which is a mistake, they being 

 both deciduous shrubs. 



Reseda. Mignonette. This fragrant little plant has 

 been already treated of as an annual; it may, however, be 

 kept under cultivation from January to December, by 

 sowing seed at different seasons in a greenhouse or warm 

 room. 



Rhododendron. Rose Bay. A beautiful genus of plants, 

 chiefly natives of India, furnishing clusters of flowers of 

 various shades, as purple, scarlet or crimson, and these 

 variegated in spots and flakes ; from March to May. 



Rosea. Rose. This Queen of Flowers, so universally 

 admired, nature seems to have distributed over the whole 

 civilized world ; and varieties have been so multiplied o^ 

 late years, as to render it difficult to make a judicious choice; 

 many of the new varieties, however, being shy bloomers', are 

 not so desirable for greenhouse culture as the common 

 China Rose, a select assortment of which, carefully cultiva- 

 ted, will produce blossoms from January to December. 



Rosmarinus. Rosemary. A fragrant half. hardy slender 

 leaved plant, which has been held in great esteem for ages. 

 In some parts of Europe it is customary to distribute 

 sprigs amongst the guests, at weddings and funerals. 



Ruella. A desirable plant, of which there are several 

 species ; they produce purple or scarlet tunnel-shaped flow- 

 ers ; from December to March. 



