INDKX, 
279 
119; July, 143; August, 167; September, 
191; October, 215; November, 239; De- 
cember, 263 
Opuntia, singular fact relative to the genus, 132 
Opuntia vulgaris, means of fruiting, 133 
Orangeries, hints on the construction of, 158 
Orange trees, advantages of washing the roots 
of, 207 ; degree of light necessary for, con- 
sidered, 158 
Orchidacese, preparations for potting, 24 ; pot- 
ting, 47 ; hints on the general management of, 
95, 119, 144, 168, 192,239, 274; indiscrimi- 
nate treatment of, prejudicial, 85 ; import- 
ance of having two or more houses for, 82 ; 
means for improving their cultivation, 85 
Orchidaceous house, remarks on a method of 
suspending plants from the roof of the, 262 
P. 
Pachypodium tuberosum, 68 
Papaw, citron-fruited, 43 
Passiflora Kermesina and Loudoniana, culture 
of, 261 
— Loudoniana, 117 
— nigelliflora, 43 
— onychina, 90 
— Tucumanensis, 43 
Passion-flower, large-stipuled, 43 
— Lieutenant Sullivan's, 90 
— nigella-flowered, 43 
Pelargoniums, full exposure to light necessary 
for, at certain periods of their growth, 181 ; 
general management of, 96, 144, 168, 216 
Pentstemon ColDsea, 163 
— crassifolius, 66 
— gentianoides, 138 
— Murravanus, winter treatment of, 
22 
Perennials, collecting and sowing seed of, 192 ; 
benefited by yearly transplantation, 207 
Petunias, propagation of, 168 
Phaius albus, 125, 139 ; natural habitats of, 
125 ; culture of, 159 
— distinction of the genus from Bletia, 126 
Phatenopsis amabile, 20, 69, 93, 162, 164 
Philibertia grandiflora, 141 
Phlox Youngii, 259 
Physiological botany, great utility of a know- 
ledge of, 113 
Physostegia imbricata, culture of, 1 74 
Pimelea incana, 116 
Pits and frames, management of, 264 ; most 
suitable for forcing plants into flower, 216 
Plants, influence of climate upon, 110, 131, 155, 
179, 203 ; importance of studying the natu- 
ral habits of, 111; effects of sudden exposure 
on exotic, 203 
Plafcystemon californicum, 141 
Pleasures of gardening, 153 
Porcupine cactus, glaucous sweet-scented, 138 
Porous plants require little light, 113 
Potentilla fernaginea, 223 
— glabra, 209 
— Tonguii, 187 
Potting plants, soils used by nurserymen in, 
183 ; important principles to be attended to 
in, 208 
Pots, improved kind of, 177 ; those employed 
by nurserymen usually too small, 184 
Propagation of tender plants, 48, 168, 255 
Protecting plants in the winter season, modes 
of, 249, 263 
Protecting tent, strictures on a, 249 
Pseudo-bulb, definition of the term, 245 
Psidium Cattleyanum, low temperature not in- 
jurious to, 252 
R. 
Rehmannia chinensis, 116 
Rejections of plants, 206 
Renanthera coccinea, 164 
Resins, their presence in plants an indication 
of a great degree of light being required, 112 
Rest necessary for exotic plants, 215, 239 
Rhodanthe Manglesii, culture of, 201 
Rhododendron albiflorum, 185 
— Cunninghamii, 69 
— guttatum, 118 
— hybrid, 67 
Rhododendrons, watering, 96 ; collecting seed 
of, 254 ; shaded situation necessary for, 180 ; 
house most suitable for the tender species of, 
180 
Ribes, directions for propagating the various 
species of, 72, 264 
Richardia ^thiopica, culture of, 225 
Rockeries suitable for mesembryanthemums, 
130 
— remarks on the formation of, 227 
Roella elegans, 165, 260 
Roofs of plant structures, materials most suit- 
able for the, 34 
Roots of tender plants, importance of protect- 
ing the, 263 
Roses, suggestions on pruning, 240 ; propaga- 
tion of China, 72, 120 
Roxburghia viridis, 117 
Rudbeckia Drummondii, 189 
S. 
Saccolabium prsemorsum, 140 
Salvia canescens, 161 
— patens, 212, 236 
Science of gardening, interest attached to the 
study of the, 154 
Sedum Sieboldii, 187 
Seed, directions for collecting and preserving, 
167 ; light necessary to mature, 183 
Shells an ornamental feature in rock-work, 229 
Shelter, different modes of applying, 263 ; ne- 
cessary for alpine plants, 230 
Shifting plants, remarks on, 109 
Shrubberies, hints respecting, 7 
Shrubs, season for pruning, 240 ; time for 
planting, 264 
Siphocampylus bicolor, 163 
Smoke, means for consuming, 81 
