GARDEN FLOWERS. 289 



species are Alpina^ arenaria, astragalina, exalfata, frigida, 

 lutea, Lapponica, oroboides, triangularis, and many others. 



Phacelia. [Hydrophyllaceae.] Pretty annuals, of the 

 easiest culture in the open ground ; the seeds being sown in 

 May. There are some unimportant perennials. 



P. congesta (crowded) ; hardy annual ; i foot ; flowers purple, 

 in June ; Texas ; 1835. P- fijnbriata (fringed) ; hardy annual ; 

 I foot ; flowers white and lilac, in June ; North America ; 1840. 

 P. tanacetifolia (tansy-leaved) ; hardy annual ; 18 inches ; flow- 

 ers blue-lilac, in June; California; 1832. P. vinifolia vine- 

 leaved) ; hardy annual ; 18 inches ; flowers Hght-blue, in Sep- 

 tember ; Texas ; 1834. 



Phalangium. [Liliaceae.] Half-hardy herbaceous per- 

 ennials, with pretty blossoms. Common soil. Increased 

 by division. 



P. Liliago (grass-leaved) ; half-hardy perennial ; i foot ; flow- 

 ers white, in May; south of Europe; 1596. 



Phalaris. [Graminaceae.] Hardy annuals. Common 

 soil. Increased by seeds. F. Canariensis produces the 

 canary seed. The other species are P. appendiculata and 

 commutata. 



Pharbitis. Gay-bifie. [Convolvulaceae.] Annual and 

 perennial twiners of graceful habit, with extremely gay flow- 

 ers. Some of the species are tender ; others may be treated 

 as half-hardy annuals. The genus contains the well-known 

 Convolvulus major, the plants commonly grown under that 

 name including the varieties of P. hispida, Nil, hederacea, 

 and perhaps some others. The colors of the Convolvulus 

 major are varied : deep-purple, violet, light-blue, white, pale- 

 rose, deep rose-crimson, and blue and white striped. This 

 convolvulus should be sown in May, in patches, round a 

 post or pillar, or at the foot of a stump of a tree, or where 

 it can be provided with tall branchy stakes on which to 

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