HICORIA HOLLY. 253 



spring in a rather dry place. The variegated sorts do bet- 

 ter if grafted upon strong stocks. 



Hicoria, Carya (Hickory, Pecan, etc.). Juglandacees. 



Increased chiefly by seeds, which should be stratified or 

 planted (about 3 inches deep) as soon as ripe; also by 

 root-sprouts. Seeds are sometimes planted at intervals in 

 the field where the trees are to stand ; but this practice 

 is not to be recommended. Cuttings of the ends of grow- 

 ing roots are often successful. The hickory can be 

 grafted. Best results are probably obtained by veneer or 

 splice-grafting in winter, on potted stocks. Cleft-grafting 

 can be employed outdoors, however, the stub being cut 

 3 to 6 inches below the ground, and the cions covered 

 with earth, as for grafting the grape. The cions must be 

 perfectly dormant, and are safer, therefore, if they have 

 been kept on ice or in a very cold cellar. Saddle-grafting 

 upon young twigs is sometimes used. Shield- and flute- 

 budding often succeed in the hickories, as, in fact, many 

 kinds of graftage do ; but the skill of the operator is more 

 important than the method. See also Pecan. 



Hippeastrum (Equestrian Star). Amaryllidacece. 



Seeds may be sown as soon as ripe in well-drained pots 

 or pans of sandy loam, slightly covered, and placed in a 

 temperature of about 65. For increasing by divisions 

 which is the usual way the old bulbs should be taken 

 from the pots and carefully separated, with the least pos- 

 sible injury to the roots. This should be done when the 

 plants are at rest, and the offsets should be placed singly 

 in pots. Keep the bulb about two-thirds above the level 

 of the soil, dispose the roots evenly, and plunge in bottom 

 heat, in a position exposed to the light. 



Hippophae (Sallow Thorn, Sea Buckthorn). Elczagnacea. 



May be increased by seeds, suckers, layers, and cuttings 

 of the roots. 



Hoffmannia, Higginsia. Rubiacece. 



Insert cuttings in sandy soil under cover, in bottom 

 heat. 



Hog Plum. See Spondias. 

 Holly. See Ilex. 



