— 3^4 — 



Pirola (Birnkraiil, Wintergrün) 220. 



— media 239. 



— minor 84, 233. 



— secunda 84, 233. 



— uniflora 274. 



Pirus communis (Birnbaum) 136. 

 Pisum arvense (Ackererbse) 131. 



— sativum (Erbse) 113, 115, 117, 131. 

 Plagiochila asplenioides 210, 251. 

 Plagiothecium pulchellum 271. 



— striatellum 271. 



Plantago arenaria 200, 214, 218, 228, 



233- 



— aristata 160. 



— Coronopus 160. 



— C3Tiops 160. 



— Lagopus 160. 



— lanceolata (Hundsrippe) 200. 



— media 200. 



— montana 67, 280, 281. 



— rhodosperma 160. 



— Rugelii 160. 



Plasmodiophora Brassicae 139. 

 Plasmopara viticola (falscher Mehltau) 



161. 

 Platanthera bifolia (Waldhyacinthe) 



251- 



— chlorantha 251. 

 Platanus 56. 



• — aceroides 43, 47. 



— occidentalis 47. 

 Pleurococcus vulgaris 210. 

 Pleurosigma 278. 

 Pleurospermum austriacum 267. 

 Poa (Rispengras) alpina 65, 83, 281. 



— annua 153, 182. 



— bulbosa 82. 



— Chaixii 248, 261. 



— compressa 199. 



- — laxa 65, 269, 271, 280. 



— nemoralis 209. 



— palustris 198. 



— pratensis 199. 

 Podocarpoxylon priscum 42. 

 Pogonatum aloides 210. 

 Polyblastia Henscheliana 187. 

 Polycarpon tctraphyllum 153. 

 Polycncmum arvense 151. 



Polycystis aeruginosa 223. 



Polygala (Kreuzblume) amara 198, 244. 



— comosa 200. 



— vulgaris (Natterblümchen) 95, 200. 

 Polygonatum (Salomonssiegel) multi- 



florum 97, 208. 



— oflicinale 208, 244. 



— verticillatum (Spelle) 237, 248. 

 Polygonum (Knöterich) 79. 



— amphibium 222, 228. 



— aviculare (Tennengras) 151. 



— Bistorta (Otterwurz) 198, 252, 264, 

 266. 



— Convolvulus (Vogelzunge) 113, 114, 



115. 151- 



— dumetorum 113, 115. 



— Hydropiper (Wasserpfeffer) 122, 

 225. 



— lapathifolium 113, 115, 122, 151, 228. 



— mite 228. 



- — Persicaria 113, 115, 122, 151. 

 Polypodium vulgare (Engelwurz, Tüp- 

 felfarn) 267. 

 Polyporus frondosus (Eichhase) 193. 



— hispidus 140. 



— ovinus ( Schaf euter) 193. 



— sulfureus 140. 

 Polystichum Braunii 79, 256. 



— lobatum 79, 219, 24S. 

 — • Lonchitis 214, 267. 

 Polytrichum (Haarmoos) commune 234. 



— formosum 210, 251. 



— juniperinum 233, 263, 265. 



— piliferum 233, 265. 



— sexangulare 262. 

 Populus 79. 



— • alba (Silberpappel) 90, 230. 

 — • balsamifera (Balsampappel) 47. 

 — - balsamoides 43, 47. 

 — • canadensis 47. 

 — • crenata 43, 45. 



— latior 43, 47. 



— nigra (Schwarzpappel) 96. 



— ■ tremula (Zitterpappel, Espe) 45, 124, 



244. 

 Portulaca oleracea (Portulak) 153. 

 Potamogeton (Laichkraut) 79, 225. 



— acutifolius 206. 



