296 GARDEN FLOWERS. 



P. albicans (whitish) ; climber ; 20 feet ; flowers white, all 

 summer; Buenos Ayres ; 1830. 



Physostegia. [Lamiaceae.] Fine hardy perennials. They 

 require the same treatment as Dracocephalum, and may be 

 propagated in the same way, both being also increased, when 

 requisite, by seeds sown in May or June, to produce bloom- 

 ing plants for the following year. 



P. iinbricata (imbricated) ; half-hardy perennial ; 3 feet ; flow- 

 ers pale rose-purple, in July; Texas ; 1 833. P. speciosa (showy) ; 

 hardy perennial ; 4 feet ; flowers rose-pink, in July ; Siberia ; 

 1822. P. Virginiana (Virginian) ; hardy perennial ; 3 feet ; flow- 

 ers red or white, in July ; North America ; 1683. 



Phyteuma. [Campanulaceae.] Handsome hardy peren- 

 nials, of easy culture in a dryish situation, and in good gar- 

 den soil. There are about a score of species. They are, 

 many of them, suitable for rock-work, and may be multiplied 

 either by seeds or by division. 



P. canesceiis (hoary) ; hardy perennial ; 2 feet ; flowers pale- 

 purple, in July; Hungary; 1804. P. comosum (tufted); hardy 

 biennial ; 9 inches ; flowers blue, in June ; Austria ; 1752. P. 

 orbiculaf'e (round) ; hardy perennial ; i foot ; flowers blue, in 

 June ; England. P. Sibiricum (Siberian) ; hardy perennial ; i 

 foot ; flowers blue, in July ; Siberia ; 1817. P. spicatuin (spiked); 

 hardy perennial ; 2 feet ; flowers blue, in May; Europe; 1597. 



PiCEA. See Abies. 



PiCOTEE. See DiANTHUS. 



Phytolacca. Poke. [Phytolaccaceae.] A hardy tall- 

 growing plant, ornamental in the shrubbery for its flowers 

 and racemes of black berries. Rich deep soil. Increased 

 by seed. 



P. decandra (ten-stamened) ; hardy herbaceous perennial ; 5 

 feet; flowers white and green, in August; North America; 

 1768. 



There are many tender species. 



