310 GARDEN FLOWERS. 



Prince's Feather. See Amaranthus and Polygonum. 



Prinus. See Ilex. 



Privet. See Ligustrum. 



Provence Rose. See Rosa. 



Prunella, or Brunella. [Lamiaceae.] Hardy herba- 

 ceous perennials. Common soil. Propagated by division. 

 P. gra?idiflora, Marry atti, ovata, vulgaris, and varieties elon- 

 gafa, fiore plena, hispida, pm?iatijida and rubra, and P. Web- 

 biana, are all useful border plants with purplish flowers. P. 

 ovata is annual. 



Prunus. Plum. [Drupacese.] Hardy deciduous tree, 

 with showy flowers. Soil, dryish loam. Propagated by 

 grafting or budding. The double-flowered and variegated- 

 leaved varieties are very showy, P. spmosa is the Sloe-tree. 



P. Japonica flore pleno is a tine hardy white flowering shrub, 

 which, when in flower, contrasts beautifully with the flowering 

 almond ; China; 1846. P. triloba is a fine pink flowering spe- 

 cies ; China ; 1847. 



PsoRALEA. [Leguminosae.] Hardy herbaceous plants or 

 greenhouse shrubs. For the former, good dr}dsh sandy soil, 

 and propagate by division or seeds ; for the latter, peat and 

 loam, and increase by cuttings in sand under glass. 



Ptelia. Hop-tree. [Xanthoxylaceae.] Hardy tree. Prop- 

 agated by seed or layers. Common soil. 



P. trifoliata (three-leaved) ; 12 feet ; flowers green, in June ; 

 North America ; 1 704. P. trifoliata variegata (variegated- 

 leaved) ; 12 feet ; flowers green, in June ; 1846. 



PuccooN. See Sanguinaria. 



PuLMONARiA. Limguwt. [Boraginaccae.] Hardy per- 

 ennials. Common soil. Propagated by division. 



P. angiistifolia (narrow-leaved) ; hardy perennial ; 9 inches ; 

 flowers violet, in May ; Britain. P. azurea (light-blue) ; hardy 

 perennial ; 18 inches; flowers blue, in May ; Poland ; 1823. P. 



