THE NURSERY-LIST 387 



Pellaea (Cliff Brake). Polypodiacece. 



Propagated by spores and division. See Ferns, page 312. 



Peltandra. Aracece. 



Multiplied by seeds when fresh, and by division. See Aracece. 



Pennisetum. Graminece. 



Increased by seed but the long-lived perennials give quicker 

 results by divisions of the old plants. 



Pentas. Rubiacece. 



Propagated from February to middle of April by cuttings of 

 young shoots in sandy soil in a warm propaga ting-house. 



Pentstemon (Beard-Tongue). Scrophulariaccce. 



Propagated by seeds, sown in pans and placed under a frame, or 

 sometimes sown in the border where the plants are to stand ; also 

 by division, and rarely by cuttings in summer. 



Peperomia. Piperacece. 



Cuttings of single joints of firm stems root easily in a peaty soil, 

 with a bottom heat of 75 to 80 ; water sparingly and do not keep 

 too close or they will damp off. Seeds may also be used. 



Pepper, Red or Cayenne (Capsicum). Solanacece. 



Raised from seeds, sown outdoors in a seed-bed or in the North 

 oftener started in the house in February or March. For the pepper 

 of commerce, see Piper. 



Perennials. 



What are known to gardeners as " perennials " are herbaceous 

 plants that live three years or more. Of course the shrubs and 

 trees are perennial (that is, perannual) but they are taken for 

 granted and are usually not in mind when perennials are men- 

 tioned. 



Many of the herbaceous perennials propagate naturally by offsets 

 and divisible parts. Of such are the lilies and other bulbous plants, 

 the day lilies (hemerocallis) that produce tuberous parts, and many 

 things that grow into clumps and " patches." Many of the 

 perennials are grown commercially by simply dividing the clumps, 

 stools and mats. Special or named varieties may be grown from 

 cuttings, as the summer perennial phloxes. 



Most of the herbaceous perennials known to ordinary commerce 

 propagate readily by means of seeds. The common perennial 



