(518) 
Pe ee 201 Salvinia, 191 
Passiflora Sam » 27 
lee a Sansevieria, 184 
Pentstemon, 269, 329 argassum, 219 
Pep ‘a, 200 Sarracenia, 194 
Pereskia, 189, 1 Saurur 
Pereskiopsis, 190 Schizocapsa, 
Phalaenopsis, 201 Schoenocaulon, 123 
Phaseolus, 42 Sciadopitys, 238 
hellodendron, 278 Scolithus, 22 
Philadelphus, 262 Sedum, 187, 246 
hilodendron, 185, 191 Selenicereus, 189 
hlox, 40, 43, 4 Semperviwum, 247 
Phoenix, 183 Seq ; 
Phormium, 195 Sigillaria, 128, 228, 229 
Phyllanthus, 200 olanum, 461 
Phyllocactus, 189 Sphagnum, 22 
Physalis, 461 Stangeria, 199, 229 
Phytolacca, 245 Stanhopea, 20 
Phytopsis, 228 Stapelia, 187 
Picea, 234, 235 Staphylea, 266 
Pieris, 27, 268 Stigmaria, 229 
tlea, 200 Streliizia, 193 
Pinus, 236, 321 Stuartia, 267 
Piper, 200 Symphoricarpos, 270 
Pisum, 43 Syrt: 269 
iutcairnia, 202 
Plantago, 337, 452 
Pleurothallis, 202 Tacsonia, 461 
umalina, 22) Taxodium, 237 
dophyllum, 246 Taxus, 
Polanisia, 24 hea 
Polemontum, 251 Theo — 6s 209 
Polygonum, 244 Thibaudia 
Pontederia, 242 huja, ee 
Populus, 271 Tillandsta, 202 
Primula, 129, 131, 151, 250, 338 Toxylon, 27 
Procris, 200 Trichomanes, 329 
Pseudolarix, 238 Trigonocarpon, 228 
Pseudotsuga, 233 Triticum, 40 
Prelea, 265 Tsuga, 234, 321 
Tule 15 
Quercus, 213, 274 ‘umion, 194, 238 
ide 453 
Remijia, 461 
Reseda, 246, 452 ee 275 
Rhabdocarpon, 228 
Rhe dia 46 Ta 
Rhex Pevbascum 40, 130, 151, 337) 452 
Rlodotendron, 26 Peroni 
Riccia, 12 Teae ie 
Robinia, 278 Xanthoceras, 266 
Rodgersta, 247 NXanthorrhiz a, 261 
Rubus, 264, 461 Nylophylla, ee 
UumMex, 244 
Russula, 112 Yucca, 188 
Sabal, 196 199, 2 
‘accharum, 191, 214 Zante a 
Sagittaria, 241 a, 
Salix, 271 Tiber 193 
