‘B54 
Platygrapha undulata, Muell. <Arg., 
455. 
Platylejeunea, Spruce, 335. 
Plectronia barbata, Benth. § Hook, j,, 
181, 205. 
odorata, Benth. § Hook. f., 181, 
205. 
Pleuroclada, 351. 
Pleurococcus coherens, Bréb., 275. 
Pleurogyne, 125. 
diffusa, Maxim., 117, 129. 
Pleurospermum, 125. 
stellatum, Benth., 104, 113, 128. 
, var. Lindleyana, Clarke, 
1138. 
Pleurothecium, 457. 
Plowright, C. B., and W. Thomson, 
the Life-history of the /®cidium on 
Paris quadrifolia, 43. 
Plumbaginee, 254 note, 506. 
Plumeria, 91. . 
Poa, 126. . 
alpina, Linn., 120, 130. 
, forma nana, 120. 
annua, 234. 
bulbosa, Linn., 251. 
nemoralis, Linn.; 119, 130. 
Podocarpex, 6. 
Podocarpus, 6, 9, 10, 33, 39, 40, 379. 
andina, ‘9. 
chilensis, 9. 
elata, R. Br., 199, 208, 211. 
falcata, 9, 434. 
ferruginea, 9. 
Mannii, Hook. f., 9, 374, 379, 484. 
spicata, 9. 
taxifolia, 9. 
Polycarpea, 259. 
memphitica, 263. 
Polycarpon, 233, 259. 
tetraphyllum, 259. 
Polygalacex, 73. 
Polygonaces, 95, 126, 189, 514. 
Polygonatum, 126. 
Polygonex, 129. 
Polygonum, 126. 
Bistorta, Linn., 138. 
bistortioides, Boiss., 138. 
equisetiforme, Sibth. & Sm., 515. 
glabrum, Willd., 189, 206. 
sibiricum, Zaxin., 118, 129. 
viviparum, Linn., 138. 
Polypodium adnascens, Sw., 201, 208. 
nigrescens, Bluine, 201, 208. 
* Phymatodes, Linn., 201, 208. 
Polystachya, 374. 
Kilimanjari, Reichd. f., 377, 384. 
Tayloriana, Rendle, 375, 385. 
tessellata, Lindl., 374, 375, 385. 
INDEX. 
Polystichum angulare, 282. 
——, var. pulcherrimum, 282. 
Pometia pinnata, Forst., 172, 203. 
Popowia Heudelotii, Bail?., 71. 
Mannii, Baill., 70. 
Populus, 528, 529. 
balsamifera, Linn., 528. 
, var. viminalis, 528. 
euphratica, Oliv., 142. 
fastigiata, Desf, 528. 
nigra, Lini., 528. 
, var. dilatata, Aiz., 528. 
Portulaca, 471. 
grandiflora, Hook., 470. 
oleracea, Linn., 169, 203. 
quadrifida, Lins., 169, 203. 
Portulacese, 169, 470. 
Posidonia oceanica, 232. 
Potamogeton, 126. 
densus, Linn., 531. 
lucens, Linn., 531. 
Potentilla, 125. 
Anserina, Linn., 135. 
bifurea, Linn., 123. 
fruticosa, Linn., 112, 128, 128, 135, 
, var. pumila, Hook, f., 112, 
135. 
nivea, Linn., 135. 
Salessowii, Steph., 123. 
sericea, Linn., 112,128, 128, 
, var. polychista, Lehm., 112. 
simplex, Michz., 490. 
Premna taitensis, Schau., 187, 206. 
Primula, 125, 142. 
auriculata, Padl., 142. 
sibirica, Jacg., 124, 
tibetica, Watt, 117, 129. 
Primulacee, 125, 129. 
Pringlea antiscorbutica, 258, 
Prionolejeunea, Spruce, 837, 389, 370. 
emula, Gottsche, 338. 
asperrima, Spruce, 341. 
denticulata, Web., 338, 340. 
Pritchardia pacifica, Seem. § H. Wendl., 
162, 195, 207. 
Procris integrifolia, D. Don, 193, 
Prosopis, 141. 
Protea, 84. 
| Protococcacese, 264, 268. 
Protococeus coherens, Kuetz., 275. 
minor, Kuetz., 275. 
turgidus, Kuetz., 275. 
Prumnopitys, 9. 
Prunus, 223. 
domestica, 488. 
, var. eeconomica, Linn., 488, 
prostrata, Labill., 487, 488. 
Pseudolarix, 27, 32, 39, 41. 
Kempferi, 33. 
