GARDEN FLOWERS. 1 9/ 



Hound's -Tongue. See Cynoglossum. 



House-Leek. See Sempervivum. 



HousTONiA. [Cinchonaceae.] Pretty little tufted peren- 

 nial herbs. Soil, a sandy mixture of three parts peat to one 

 of loam. Increased by division. 



H. c(Brulea (blue) ; hardy perennial ; 3 inches ; flowers bluish- 

 lilac, in May; North America; 1785. H. purpurea (purple); 

 hardy perennial ; i foot ; flowers purple, in May ; North Amer- 

 ica ; 1800. H. serpyllifolia (thyme-leaved); tender perennial ; 

 6 inches ; flowers white, in May; North America ; 1826. 



These plants are now called Oldenlandia, and are rather 

 insignificant singly, but in the mass are showy. H. ccendea 

 is the species which in spring almost w^hitens the pastures. 

 H. serpyllifolia, a Southern species, is tender and of little 

 value. 



Hagelia. [Polemoniacete.] Dwarf hardy annuals, allied 

 to Gilea, and thriving under the same treatment. Sow in 

 light border soil in May. 



H. densiflora (dense-flowered) ; hardy annual ; i foot ; flow- 

 ers blue, in July ; California ; 1833. H. elo7igata (lengthened); 

 hardy annual ; i foot ; flowers deep-blue, in July ; CaHfornia ; 

 1833. H. lanata (woolly) ; hardy annual ; i foot ; flowers light- 

 blue, in July; CaHfornia; 1847. H. lutea (yellow); hardy an- 

 nual; 6 inches ; flowers yellow, in July; California; 1833. H. 

 virgata (twiggy) ; hardy annual ; i foot ; flowers deep-blue, in 

 July; California; I833- 



HuMEA. [Compositae.] A greenhouse biennial of sin- 

 gular grace and beauty. The seeds should be sown in May, 

 and for a year potted from smaller to larger pots, win- 

 tered in a cold frame, and in May turned into the border in 

 a sheltered situation. They wdll grow from eight to ten feet 

 high. Others may be potted in twelve-inch pots, with loam 

 and dung in equal parts for the compost. Those in pots 

 must be regularly supplied with water, because they will 



