2 3 2 THE NURSERY-BOOK. 



Nolana. Convolvulacece. 



Seeds sown in the open border during spring. 

 Norantea, Ascium, Schwartzia. Ternstrbmiacece. 



Ripened cuttings can be rooted in sand, in heat. 



Norfolk Island Pine. See Araucaria. 

 Norway Spruce. See Picea. 

 Notelsea, Rhysospermum. Oleacece. 



Seeds. Cuttings of firm side-shoots in spring, usually 

 without heat. 



Nuphar. Propagated same as Nelumbo and Nymphsea, which 



see. 



Nutmeg. See Myristica. 

 Nuttallia. Rosacece. 



May be propagated by seeds ; by divisions ; by means of 



suckers, which spring from the roots. 



Nyctanthes. Oleacece. 



Cuttings of half-ripened shoots should be set in spring, in 

 bottom heat. 



Nymphaea, Castalia (Water Lily, Lotus). Nymphceacece. 



Seeds, which are rolled up in a ball of clay and dropped 

 into a pond, or sown in pots which are then submerged in 

 shallow water, either in-doors or out. Usually increased by 

 portions of the root-stocks, which are sunk in the pond and 

 held by stones, or the tender species placed inside, in pans of 

 water. Some species produce tubers on the root-stocks, 

 which are used for propagation. 



Nyssa (Pepperidge, Sour Gum, Tupelo-tree). Cornacece. 



Increased by seeds and by layers. The seeds should be 

 sown as soon as ripe or else stratified. They usually lie 

 dormant the first year. 



Oak. See Quercus. 

 Obeliscaria. See Rudbeckia. 

 Ochna. Ochnacece. 



During summer, cuttings may be made of growing shoots. 

 Odontoglossum. Orchidece. 



Division. (See also under Orchids.) 



