INDEX 



463 



ing and shipping, 452, 453 ; popu- 

 larity of, 274 ; preparation for 

 shipping, 275; propagation by 

 seeds, 276 ; temperature require- 

 ments of, 277 ; treatment of 

 freshly imported, 275. 



Orders, filling, 442, 443. 



Osmosis, 136, 140. 



Oxalis, botanical classification, 

 characters, habitat and culture 

 of, 335. 



Oxygen, value of, 143. 



Packing and shipping plants and 

 flowers, 440. 



Palms, 375 ; botanical classifica- 

 tion of, 375 ; character of, 377 ; 

 culture of, 378, 379 ; habitat of, 

 377 ; list of genera and species 

 most commonly grown, 377 ; 

 propagation of, 377, 378. 



Pandanus, botanical classifica- 

 tion, characters, habitat, prop- 

 agation and culture of, 381, 

 382. 



Pellaea, botanical classification, 

 characters, habitat and culture 

 of, 369. 



Phalanopsis, classification, charac- 

 ters, habitat and culture of, 289, 

 290. 



Phlebodium, botanical classifica- 

 tion, characters, habitat and cul- 

 ture of, 367, 368. 



Phycomycetes, 199, 200. 



Physiology, plant, 132. 



Pipe-frame houses, 65, 68. 



Planning of greenhouses, necessity 

 for careful, 85, 86. 



Plant-breeding, 11. 



Plant-food, contents of soil, 144 ; 

 cutting bench requirements of, 

 165 ; solubility of, 142. 



Plant growth, elements essential for, 

 186, 187. 



Plant morphology, 132. 



Plants, list of genera and species 

 suitable for summer window 

 boxes, 436, 437 ; list of genera 



and ' species suited for winter 

 window boxes, 436; suited for 

 inside window boxes, 438, 439 ; 

 suited for outside window boxes, 

 436. 



Plant shipments, cold weather, 446 ; 

 bedding, 448 ; express or freight 

 on, 447 ; field-grown, 447 ; label- 

 ing, 453 ; method of packing 

 flowering-, 444, 446 ; preparation 

 of flowering-,- 443 ; shipping in 

 pots or out of pots, 443 ; size of 

 crates for, 444; specimen or 

 large, 446. 



Plant structure, its relation to 

 healthy plant growth, 132. 



Platyceriums, botanical classifica- 

 tion, characters, habitat and 

 culture of, 364, 365. 



Poinsettias, botanical classification, 

 characters, habitat, commercial 

 importance, propagation and cul- 

 ture of, 351, 352, 353. 



Polypodiums, botanical classifica- 

 tion, characters, habitat and cul- 

 ture of, 367. 



Polystichum, botanical classifica- 

 tion, characters, habitat and cul- 

 ture of, 372. 



Potted flowering plants, 311 ; list 

 of more commonly grown genera 

 of, 311. 



Potting, clean pots essential for, 

 123; facilities for rapid, 123; 

 fineness of soil for, 123 ; flower- 

 ing plants, 125 ; method in, 124 ; 

 necessity for an adequate supply 

 of pots in, 123. 



Primroses, botanical classification, 

 314, 316 ; characters, 316 ; cul- 

 ture of, 317; habitat of, 314; 

 outdoor, 317 ; propagation of, 

 316, 317. 



Propagating, care necessary in seed 

 sowing in, 122 ; cleanliness neces- 

 sary in, 122 ; of young plants, 

 121 ; sand for, 122 ; season for, 

 122; selection of material for, 

 122. 



