210 glenny's handbook 



smaller sorts will flower in pots ; but the}' ^^ant plenty of 

 trellis, as they only flower when the plant has naade con- 

 siderable growth. All strike freely from cuttings in sand with 

 bottom heat, and when well rooted should be potted into small 

 pots, which must be changed as they advance. They require 

 a moderately rich soil to bring them to a vigorous and finely- 

 bloonjed condition, and when grown in pots weak liquid 

 manure is very beneficial to them during their blooming 

 period. The following are the best : — P. ccerulea, half-hardy 

 climbing shrub, flowers white and blue. P. caridea racemosa, 

 flowers reddish purple. P. edulis, stove climbing shrub, 

 flowers whitish. P. Jcermesina, stove climbing shrub, flowers 

 crimson. P. Loudonii, stove climbing shrub, flowers scarlet. 

 P. quad ran (jidaris, stove climbing shrub, flowers brown, red, 

 and green. Of numerous other fine stove species the best 

 are P. alata, P. Billottii, P. Middletoniana, and P. onychina. 

 There are many curious minute-flowered species with green 

 blossoms. 



PATERSOXIA. [Iridaceae.] Greenhouse herbaceous 

 perennials. Peat and loam. Seeds or division. All the 

 species have blue or bluish, showy but fugitive flowers. 



PAULOWNIA. [Scrophulariacese.] A fine deciduous 

 tree, allied to Catalpa, scarcely hardy in England except in 

 the most favoured spots, in consequence of its producing veiy 

 robust shoots, which English summers seldom ripen. Its 

 large bunches of trumpet-shaped purplish flowers are very 

 handsome. It should be planted in a dry soil, and in warm 

 situations, where its vigorous shoots would be well ripened 

 annually, and is increased by layers. The only one cultivated 

 is P. imperialis, hardy tree, flowers purplisli. 



PAVIA. [Sapindacese.] A small group of the Horse- 

 chestnut family, consisting of handsome flowering trees of the 

 smaller class. They grow in any deep lightish garden soil, 

 and are usually increased by grafting on the common Horse- 

 chestnut or by layers. 



PEACH. See Persica. 



PEDICULARIS. LousEWOET. [Scrophulariacese.l Hardy 

 and half-hardy perennials, often very handsome, but not very 

 cultivable. Damp peaty sofl. Seeds. Many species have 

 been introduced, but they are speedily lost. 



