2-20 gi.enny's handbook 



parts sandy fibry peat soil to one of light loam, rendered a 

 little sandy, and more especially so for the younj^ plants. 

 They are raised by cuttings in sand under bell-glasses, or 

 sometimes by grafting. As soon as they are separately 

 established in little pots they must be topped, and this 

 topping must be continued as often as new shoots of two or 

 tliree inches long are pushed forth, until a thick dense bush 

 is produced ; then it may be allowed to flower, and it will 

 regulate its own growth for the most part. The greenhouse, 

 with plenty of air and a moderate degree of shade in hot 

 sunny weather, is the place for them ; and this, from June 

 till August inclusive, may advantageously be exchanged for a 

 cold frame, elevated so that there is a circulation of air 

 beneath, and provided with sashes to be put on, but not 

 closed up, during continued and heavy rains, and also in the 

 middle of hot days, and then with a shading over them. 

 Pimeleas are easily killed by neglect of watering in drying 

 weather, and not less easily by over- watering in gloomy 

 weather or in winter. The best are P. decussata, flowers 

 pink. P. Hendersoni, flowers deep rose pink. P. Unifolia, 

 flowers white. P. Nieiypergiana, flowers white. P. spectahilis^ 

 flowers flesh-coloured. 



PIMPERNEL.' See Anagallis. 



PINK. See Dianthus. 



PINUS. Pine Tkee. [Coniferse.] Fine hardy evergreen 

 trees. Good light soil. Seeds, or the rarer sorts by grafting. 

 The principal are P. Jeffryana, P. montlcola, P. cemhra, P. 

 excelsa, P. Lambertiana, P. laricio, P. Lindleyana, P. pinaster, 

 P. pijiea, P. ponderosa, P. Sabiniana, P. strobus, and P. Ben- 

 tliamiana. There are numerous other very striking species 

 in cultivation. 



PITCHER PLANT. See Nepenthes. 



PITTOSPORUM. [Pittosporacete.] Greenhouse ever- 

 green shrubs, more remarkable for their evergreen foliage 

 than for the attractiveness of their blossoms, which are small, 

 and mostly white or straw-coloured. P. Tobira stands against 

 a wall in the climate of London. They should be potted into 

 a compost of peat and loam, and increase by cuttings or by 

 seeds. The best two are P. fluvnm, flowers yellow; and P. 

 undulatum, flowers white. 



