285 
29, 30, 46, 47, 187, trivialis 29-31, 33, 35, 46, 49. Pole- 
moniaceæ 230. Polemonium coeruleum 230. Polychidium 
muscicolum 174. Polygala depressa254, vulgaris 51, * oxyp- 
tera 253. Polygaleæ 253. Polygoneæ 206. Polygonum 
amphibium 50, aviculare 206, Bistorta 206, dumetorum 207, 
nodosum 206, Raji 206, Roberti 206. Polypodium Dryop- 
teris 18, 23, 182, Phegoteris 182, vulgare ß. auritum 182. 
Polytrichum urnigerum 178. Pomaceæ 55, 111, 257 — 258. 
Populus 17, 19, 157, 176, alba 54, balsamifera 55, candicans 
55, 204, Italica 55, laurifolia 204, monilifera 54, nigra 54, 
204, Ontariensis 204, pyramidalis 55, tremula 54. Portu- 
laceæ 249. Posidonia 144, 145. Potamogeton acutifolius 
201, coloratus 200, densus 200, fluitans 200, gramineus 
graminifolius 200, ß, heterophyllus 21, lucens 21, v. acumi- 
nata 21, 200, marinus 22, 201, mucronatus 201, nîtens ß. 
heterophyllus 200, obtusifolius 200, v. fluvialis 201, peetina- 
tus ß. scoparius 201, polygonifolius 200, prælongus 21, 200, 
Zizii 200, zosteræfolius 201. Potentilla 111, anserina 51, 
v. concolor 267, v. sericea 267, argentea 51, impolita 268, 
Fragariastrum 267 , opaca 268 , procumbens 268 , recta 268, 
reptans 51, Tormentilla 51, v. pinnatifida 268, verna 268. 
Poterium diatyocarpum 268, Sanguisorba 111. Pourrettia 
145, 147, 165, coarctata 146. Preissia commutata 177. 
Primula 73 — 75, acauli-elatior 237, digenea 237, elatior 73 — 75, 
V. maxima 237, farinosa 236, flagellicaulis 236, grandiflora 75, 236, 
/^.caulescens 75, officinali-grandiflora 236, officinalis 75, variabilis 
75, 230, V. expallens 237, v. radiciflora 237. Primulaceæ 
63 — 77, 236. Prunus Armeniaca 55, Cerasus 55, domestiea 
55, 269, insititia 269, Padus 20, 55, 269, spinosa 51, ß. coæ- 
tanea 269, Virginiana 55. Psamma arenaria 49, 174, 186, 
Baltica 186. Psaronius 146. Psilotum 154. Pteris aqui- 
lina 175, v. pubescens 183. Puccinia Adoxæ 41, 42, ano- 
mala 35, 36, Brachypodii 41, coronata 39, 40, graminis 40, 
41, Hordei36, Moliniæ 41, Poarum 36— 47, straminis 26— 28, 
33, 37, 39, V. simplex 36. Pulicaria dysenterica 209, vul- 
garis 209. Pulmonaria officinalis v. albiflora 228, f. grandi- 
flora (brevistyla) 228, v. rosea 228. Pulsatilla nigricans 242, 
V. flava 242, vulgaris 242. Puya 147, 149, 156—160, 168 
—170, longifolia 147, 160, 161, polyanthos 147, 160. Pyre- 
nula farrea 176. Pyrola 84, 121—125, chlorantha 60, 223, 
grandiflora 82, media 223, minor 18, 20, 23, 82, 122-124, 
rotundifolia 124, 223, secunda 18, 60, 82. 124, 223, uniflora 
18, 60, 223. Pyrolaceæ 82. Pyrus Malus 51, 257, com- 
munis 257. 
Ouereus 17, 19, 174, pedunculata 17, sessiliflora 17, 
203. 
