172 HOT-HOUSE OF REPOTTING, ETC. 



at that time to be in a half dry state. They are in flower 

 from May to August. (Soil No. 12.) 



PandanuS) Screw Pine. There are about twenty specie?. 

 in this genus, several of them very interesting, but none so 

 greatly admired as P. odoratissimus. The leaves in estab- 

 lished plants are from four to six feet long, on the back 

 and edges spiny ; are spreading, imbricated, and embracing 

 the stem, and placed in three spiral rows upon it. The 

 top soon becomes heavy, when the plant throws out prongs 

 one, two, or three feet up the stem in an oblique descending 

 direction, which take root in the ground, and thus become 

 perfectly supported. It is cultivated in Japan for its de- 

 lightful fragrance, and it is said, " of all the perfumes, it is 

 by far the richest and most powerful." P. titilis, red- 

 spined. We question this species, and are inclined to 

 believe that it is the former, only when the plants are newly 

 raised from seed the spines and leaves are red, changing to 

 green as they become advanced in age. The plants are easy 

 of culture, and will grow almost in any soil. (Soil No. 

 12.) ' 



Passifloraj "Passion-flower, so named on account of its 

 being supposed to represent in the appendages of its flower 

 the Passion of Jesus Christ." There are about fifty species, 

 all climbing plants, that belong to the hot-house. Many are 

 of no ordinary beauty ; a few species are odoriferous ; others 

 bear edible fruits, though not rich in flavour. P. alata is 

 in our collections, and greatly admired; the flowers are red, 

 blue, and white, beautifully contrasted, and flower profusely 

 in pots. P. racemosa, red flower. P. ccerulco-racemosa, 

 purple. P. quadranyularis has beautiful red and white 

 flowers. The plant is iy. several collections, but has seldom 

 flowered; it requires to be planted in the ground to make it 

 flower freely, and it will also produce fruit. P. picturdta is 

 a scarce and beautiful ,'afious-coloured species. P. kerme- 

 sina, bright rosy crimson, and, beyond all question, the most 

 profuse flowering species now in cultivation, and will do well 

 in a good green-house. P. Loudbnii, bright crimson. P. 

 edults is cultivated for its fruit. There are many other fine 

 species, but these are the most esteemed sorts; and, when 

 well established, will flower profusely from May to August 

 They am desirable in every collection, and will take only a 



