490 
Platyclinis, 308. 
Platygalia, 432. 
Platystemon californicus, 361, 363. 
Pleurogyne carinthiaca, 119. 
rotata, 119. 
Plowright, Chas. B., Experimental 
Observations on certain British Hete- 
recious Uredines, 88. 
Plumbago zeylanica, 137. 
Poa, 461. 
amabilis, 136. 
annua, 209, 211, 216, 234, 250, 
455. 
aquatica, 464. 
pratensis, 455, 461. 
trivialis, 455, 461. 
Pogonatum, 269; apophysis absent from 
many species of, 264. 
alpinum, 265. 
Pogonotrophe, 29. 
Pogostemon Heyneanus, 145. 
Poinciana pulcherrima, 141. 
Polianthus tuberosa, 139. 
Polycarpsea corymbosa, 138. 
Polycodon, $, 186. 
Polygala arvensis, var. 8, 147. 
chinensis, 147. 
ciliata, 146. 
g'aucoides, var., 147. 
triflora, 147. 
Polygonaces, 456, 458. 
Polygonatum multiflorum, 254, 255, 
256, 361, 362. 
Polygonum amphibium, var. terrestre, 
Bistorta, 3706. 
Convolvulus, 254. 
Dumetorum, 254. 
lapathifolium, 254. 
Persicaria, 456, 458. 
polystachyum, 76. 
Polypodium adnascens, 152. 
ameenum, 417. 
; forma pilosa, 417. 
anomalum, 415. 
argutum, 417. 
, forma khasiana, 417. 
auriculatum, 152. 
bifurcatum, 260, 
cyrtolobum, 418. 
dareveformis, 410. 
Dipteris, 260. 
Griffithianum, 418. 
hastatum, var. oxyloba, 418. 
juglandifolium, 418. 
; Var. pauper, 418. 
Labrusca, 259. 
Lingua, 259. 
lingusforme, 260. 
nigrescens, 260, 
ovatum, 418. 
INDEX. 
Polypodium quercifolium, 152. 
quinquefurcatum, 260. 
Spelunce, 152. 
subarboreum, 259. 
subauriculatum, 417, 418. 
unitum, 154. 
verrucosum, 259. 
Polystichum aurieulatum, 152. 
Polytrichacese, 262, 263, 264, 265. 
Polytrichum, 267-274. 
commune, 265, 269, 270, 271, 273, 
283, 284, 285. 
formosum, 265, 269, 270, 271, 278, 
283, 284, 285. 
juniperinum, 265, 269, 271, 284, 
285 
piliferum, 265, 269, 270, 273. 
Pontederia hastata, 139. 
Populus tremula, 441, 442, 443, 444. 
Porphyra, 60. 
Porphyracez, 60. 
Portulaca, 305. 
Post, Dr. G. E., Diagnoses Plantarum 
Novarum Orientalium, 419. 
Potamogeton, sp., 459. 
crispus, 361, 363. 
Potentilla Anserina, 455, 458. 
Fragariastrum, 457. 
reptans, 455. 
Poterium Sanguisorba, 457. 
Pothos scandens, 149. 
Potter, M. C., Note on an Alga (Der- 
matophyton radicans, Peter) grow- 
ing on the European Tortoise, 251. 
Pouzolzia indica, 151. 
zeylanica, var., 151. 
Prangos Arcis-Romane, 431. | 
melicocarpa, var. trachonitica, 430. 
Premna serratifolia, 154. 
Prepusa. 109. 
Primula Veris, 458. 
vulgaris, 363. 
Primulaceg, 456, 458. 
Protea, 272. 
Protococcacez, 52, 54, 55, 59. 
Protococcoider, 55. 
Protococcus, 53, 54. 
Protophyta, 51, 52, 53. "C 
Protoplasm of Elodea and Vallisneria, 
Rotation of (Moore), 235. . 
Protoplasm, Transpiration as 4 nn 
tion of Living, Rev. G. Henslow, 286. 
Protoplasmic Movement, the Influence 
of Light upon (Moore), 200, 351. 
Prunella, 463. 
vulgaris, 456, 463. 
Prunus domestica, 361. 
Psammogeton, 431. 
Pseudallantodia, $, 413. 
Pseudarthria viscida, 147. 
Pseuderemia, $, 178, 179. 
