INDEX OF STARCHES. 



Piper sidffifolia. Seed, 287 



Piptatherum multiflorum Beauv. >Sced, 276 



Pircunia latbenia Moq. Seed, 292 



Piaonia aculeata Linn. Seed, 203 



Pistia stratiotes Linn. Seed, 265 



texensis Kltzsch. Seed, 265 

 Pisum. Seed, 268 



Pisum sativum Linn. Seed, 65, 72, 174, 176, 178, 190, 



210, 268 



var. (Electric Extra Early) Hort. 



Seed, 407 



(Eugenie, Green) Hort. Seed, 402 



(Eugenie, Yellow) Hort. Seed, 404 



(Large Wliite-Marrowfat) Hort. 



Seed, 409 

 (Mammoth Grey Seeded) Hort. 



Seed, 408 

 (Thomas Laxton) Hort. Seed, 406 

 Pitcairnia albuc»folia Schrd. Seed, 202, 264 



punicea Lindl. Seed, 202, 264 

 Plantago maritima Linn. Root-stock, 237, 271 



media Linn. Root-stock, 237, 271 

 Platanthera bifolia Rich. Tuber, 235 

 Plectopoma fimbriatum Hanst. Root-stock, 231 

 Plumbagella micrantha. Seed, 249 

 Plumbaginaceai. Seed, 248 

 Plumbago micrantha Led. Seed, 249 

 Poa nemoralis Linn. Seed, 281 

 Podophyllum peltatum Linn. Root-stock, 72, 239, 274 

 Polemonium reptans Linn. Root-stock, 237, 259 

 Polycarpaja teneriffa; Lam. Seed, 291 

 Polycnemum niajus A. Br. Seed, 289 

 Polygonacea;, 418-420 



Underground parts, 236 

 Polygonum alpinum All. Trunk, 236 



aviculare Linn. Root, 236, 270 

 bistorta linn. Root-stock, 188, 236 

 convolvulus Linn. Root, 236, 270 

 fagopyrum Linn. Seed, 181, 184, 188, 203, 

 254 

 var. Hort. Seed, 418, 419 

 orientale Linn. Seed, 203 

 tinctorium Lour. Seed, 202 

 viviparum Linn. Root-stock, 236 

 Polypodium distans Kaulf . Root-stock, 237 

 vulgare Linn. Root-stock, 237 

 Polypogon monspeliensis Dsf. Seed, 278 

 Polystiohum thelypteris Roth. Root-stock, 233 

 PommereuUa royleana Steud. Seed, 280 

 Pontederia sp. Seed, 208 

 Portulaca grandiflora Hook. Seed, 290 



Root. 241, 261 

 megalantha Steud. Seed, 290 



Root, 241, 261 

 Potamogeton natans Linn. Seed, 209 



prselongus Wulf. Seed, 209 

 Potentilla aurea Linn. Root-stock, 263 



tormentilla Linn. Root-stock, 242 

 Pothos acaulis Linn. Seed, 209 

 Potomorphe sida;folia Miq. Seed, 287 

 Primula calycina Dub. Root, 238, 260 

 glaucescens Mor. Root, 260 

 officinalis Jacq. Root-stock, 238 

 Protium pubescens. Dry cotyledons, 267 

 Prunus virginiana, 71 

 Psilurus nardoides Trin. Seed, 285 

 Psittacanthus vellozianus Mart. Seed, 219 

 Pteridophyta. Green parts, 268 

 Pterostegia drymarioides F. M. Seed. 202 

 Ptiloneilema plumosum Steud. Seed, 279 

 Punica granatum Linn. Root, 242 

 Pupalia prostrata Mart. Seed, 289 

 Puschkinia libanotica Zucc. Bulb. (See P. scilloidee 

 var. libanotica.) 

 scilloides Adams. Bulb, 551 



var. libanotica Boiss. Bulb, 552 



Puschkinia siccula Hort. Bulb. (See P. sdlloidcs var. 



libanotica.) 

 Pyrola rotundifolia Linn. Root-stock, 238, 260 

 I'yrus communis Linn. Seed, 267 

 malus Linn. Fruit, 262, 267 

 Quassia, 71 



Quercus. Seed, 59, 176, 178 



Qucrcus acuminata Sarg. Seed. (See Q.muclilenbergi.) 

 alba Linn. Seed, 421 

 ambigua Michx. Seed. (See Q. rubra.) 

 baniateri Michx. Seed. (See Q. ilicifoliu.) 

 castaneaWilld. Seed. (SecQ. muehlenbergi.) 

 cerris Linn. Seed, 248 

 femina Mill. Seed. (See Q. pedunculala.) 

 ilicifolia Wangh. Seed, 248 

 muehlenbergi Englm. Seed, 423 

 montana Willd. Seed. (See Q. prinus.) 

 nana Sarg. Seed. (See Q. ilicifolia.) 

 pedunculata Ehrh. Seed, 181, 182, 248, 273 

 prinus Linn. Seed, 424 



var. acuminata Michx. Seed. (See Q. 

 muehlenbergi.) 

 monticoUa Michx. Seed. (See Q. 

 prinus.) 

 robur Linn. (See Q. pedunculata.) 



var. pedunculata DC. Seed. (See Q. 

 pedunculata.) 

 rubra Linn. Seed, 426 

 texana Buckl. Seed, 427 

 Quillaya, 72 

 i Ranunculus aconitum Linn. Root, 228 



bulbosus Linn. Root, 217, 272, 867 



Pollen, 243 

 ficaria Linn. Root, 228, 239, 252, 868 

 flammula Linn. Root, 261 

 garganicus Ten. Root, 217 

 pyrenajus Linn. Root, 239 

 rutajfolius Linn. Root, 261 

 speciosus Hort. Root. (See R. bulbosus.) 

 thora Linn, Root, 261 

 Ranimculaceo:, 865-869 

 Reaumuria vermiculata Linn. Seed, 293 

 Restio ferruginosus Link. Seed, 286 



incurvatus Thbg. Root-stock, 256 

 Reussia triflora Endl. Seed, 208 

 Rhamnus purshiana, 71 

 Rheum hybridum Ait. Seed, 202 



rhaponticum Linn. Seed, 187, 202 

 undulatum Linn. Root, 257 

 sp. Root of rhubarb, 72, 257 

 Rhipsalia funalis Salm. Stem, 240 

 Rhizophora mangle Linn. Root, 228 

 Rhyncospora fusca R. S. Seed, 247 

 IlichardiasethiopicaHort. Rhizome. (SeeR. africana.) 

 africana Kunth. Seed, 286 



Rhizome, 451 

 albo-maculata Hook., 452 

 elliottiana Knight, 449 

 solfatarre Hort. Rhizome. (Plate 16, 6g. 94.) 

 Richardsonia scabra Kth. Root, 215, 271 

 Riedleia corchorifolia DC. Seed, 220 

 Rivina purpurascens Schrd. Seed, 292 

 Romulea rosea var. speciosa Baker. Bulb, 750 

 Rottboella arundinacea Hchst. Seed, 201, 264 



campestris Nutt. Seed, 264 

 Rubus, 72 

 Rumex, 72 



acetosa Lum. Root-stock, 236, 270 

 arifoliua All. Root-stock, 236, 257 

 crispus Linn. Root, 236 

 maritimus Linn. Root, 236, 271 

 obtusifolius Linn. Root, 236 

 patientia Linn. Seed, 203 

 sanguineus Linn. Root, 236 

 tuberosus Linn. Root, 257 

 Ruppia maritima Linn. Pollen, 243 



11] 



