202 THE NURSERY-BOOK. 



are to be had. They start readily in sand or soil on a cut- 

 ting bench, or under a frame. Plants for bedding are struck 

 in late winter from stocks which are in a vigorous condition 



Helipterum, including Astelma, Rhodanthe. Composite. 



Seeds may be sown in early spring, under cover. 

 Helleborus (Black Hellebore, Christmas Rose). Ranunculacecc 



Seeds may be sown as soon as ripe. Strong and healthy 

 root divisions are also employed. 



Helonias. Liliacecc. 



Propagation is effected by seeds, and slowly by root divis- 

 ions. 



Hemerocallis (Day Lily). Liliacece. 



Increased by divisions. H. Middendorjii and some others 

 by seed. 



Hemlock Spruce. See Tsuga. 

 Hemp. See Cannabis. 

 Hepatica. Ranunculacece. 



Can be propagated by division ; also by seeds. 

 Heracleum (Cow Parsley, Cow Parsmp). Umbelliferce. 



Readily increased by seeds or divisions. 

 Herbertia. Iridece. 



Propagated by means of seeds or bulbels. 

 Herb-Robert. See Geranium. 

 Hesperis (Dame s Violet, Rocket). Crudferce. 



The single sorts are increased by seeds ; the double forms 

 by carefully dividing the roots, or by cuttings. 



Heterocentron. Melastomacece. 



Propagated by cuttings. 

 Heucheria (Alum Root). Saxifragece. 



Seeds. Readily increased by dividing the crowns during 

 spring. 



Hevea, Micrandra, Siphonia. Euphorbiaccce. 



Cuttings should be made of half-ripened wood, and in- 

 serted in sand under glass. 



Hibbertia, including Cyclandra, Pleurandra. Dilleniacec?. 

 Cuttings, in sandy peat under glass. 



