196 GARDEN FLOWERS. 



Hickory. See Carya. 



HiERACiuM. [Compositae.] A large genus of yellow- 

 flowered composite plants, none of which are of much hor- 

 ticultural importance. Common soil. Increased by divis- 

 ion or by seeds. 



HiPPOPHAE. Sea Buckthorn. [Elaeagnaceae. | Hardy 

 shrubs, allied to Shepherdia, doing well in sandy soil, and 

 propagated by layers and suckers. The species is H. rhani- 

 noides^ with the varieties angustifolia and Sibirica, 



Holly. See Ilex. 



Hollyhock. See Alth^a. 



Hologymne. See Lasthenia. 



Honesty. See Lunaria. 



Honey-Locust. See Gleditschia. 



Honeysuckle. See Lonicera and CAPRiFOLnjM. 



HoNEYWORT. See Cerinthe. 



Hoop-Petticoat. See Corbularia. 



Hop. See Humulus. 



HoRMiNUM. [Labiatae.] A showy dwarf hardy herba- 

 ceous perennial, requiring a dry situation and a sandy soil, 

 or else to be kept in a dry cool frame in winter. Increased 

 by seeds or division. Not hardy in the Northern States. 



H. Pyrenaicum (Pyrenean) ; hardy perennial ; i foot ; flowers 

 blue-purple, in June ; Pyrenees ; 1820. 



Hornbeam. See Carpinus. 



HoRN-PoppY. See Glaucium. 



Horse-Chestnut. See tEsculus. 



Horse-Tail. See Equisetum. 



HoTEiA. [Saxifragaceas.] A very handsome hardy per- 

 ennial, formerly called Spiroea Japonica. Soil, sandy loam 

 and peat. Increased by division. 



H. Japoiiica Qapan) ; hardy perennial ; 3 feet ; flou'ct'o white, 

 in May; Japan; 1835. 



