300 THE NURSERY LIST. 



Pistacia. Anacardmcece. 



Seeds, cuttings and layers. The pistacio-nut or "green 

 almond" {P. vera) is usually grown from seeds, which 

 are planted where the trees are to stand. It is sometimes 

 grafted upon P. Terebinthus, to give it greater vigor. 



Pitcairnia. See Billbergia. 



Pitcher-plant. See Nepenthes and Sarracenia. 



Pittosporum. Pittosporacea. 



Seeds, and by cuttings of the growing or ripe wood, 

 under glass. 



Planera (Planer- tree). UrHcacece. 



Propagated by seeds, which should be handled like elm 

 seeds. 



Plane-tree. See Platanus. 



Plantago (Plantain). Plantaginaceis. 



Seeds. The perennial species also by division. 

 Plantain (fruit). See Banana ; also Musa. 



Platanus (Plane-tree, Buttonwood ; Sycamore, improperly). 

 Plaianacees. 

 Usually propagated by seeds, but layers and ripe-wood 

 cuttings may be employed. 



Platycerium (Stag's-Horn Fern). Filices. 



Chiefly by division. See Ferns. 

 Platycodon, Wahlenbergia. Campanulacecz. 



Propagated by seeds, and, when old plants are obtain- 

 able, by division. 



Plectocomia. Paltnacees. 



Seeds. May be increased by suckers. 



Plum (Prunus, many species). Rosacece. 



There are so many species of plums in cultivation, and 

 the varieties of the same species are often so different in 

 constitution and habit, that it is difficult to give advice 

 concerning their propagation. All the species grow read- 

 ily from fresh, well-ripened seeds. The pits should be 

 removed from the pulp and then stratified until spring. 

 If they are allowed to freeze, the germination will be 

 more uniform, as the pits will be more easily opened by 

 the swelling embryo. Plum pits are rarely cracked by 



