l'utf. 



Pcris/i/lus V. H/cc/,iii . . . .111 

 J^eristi/lus V. Coeloi/lossuin . . » 

 Persica V. A»ii/;jdalus . . .lui' 



Perrinca v. r/;i«( 2(il 



Pelasi tes 3ti:{ 



Petrosetinuin v. Apiiim . . . '.i'.)7 



Peucedaiiuin -lir) 



Peucedanvm v Ani/vliia . . -IIl' 

 » V. Pasti luu-ti . .113 



Phaoa 48 { 



Phaenopi/s v. Lav/ii'u . . . .'iOó 



Phagnalon 3515 



Plialaiigium 90 



Ptialaris 18 



PhtUaris v. Alopecurus . . . 22 

 » V. Koeleria .... •!.') 

 » V. Leersia .... IS 

 » V. Phleitm .... 21 



Phaseolus in.") 



Phelipaea 218 



Phleuin 21 



Phleitm V. Ci/nosurtis . . . 39 

 » V. Poli/pogoìi . . . 32 

 > V. Triticinu .... 57 



Phragraites 29 



Ph.yllirea 2(i3 



Pliysalis 2'12 



Pliyieuraa 281 



Phytolaoea 177 



Picnomon v. Cirsium .... 322 



Picridiura 308 



Picns 314 



Picris V. Crepis 302 



» V. I [elmi, Uhi a . . . .313 

 > V. Leontodon . . . .,311 



Pimpinella 398 



Pimpinella v. Trinia .... » 



Piiius 3 



Piptuiherum 3.3 



Plrolacee 27(i 



l'isLK'ia 512 



Pisiim 475 



Pisum V. Lathi/rus .... 474 



Plantag^inaose 18! 



Pianta;,'!) » 



Platanaces 14(> 



Phuinlliera 112 



Phiuinus 1 IO 



Pli'ìiruspermiim v. ilulahai/a . 405 



Plambaglnaose 185 



Pluinlja^'o 180 



Poa 41 



Pud V. Cuto/ioiliìiiii .... 51 



» V. Krai/roxtis .... 43 



» V. Oh/ecrin 40 



•» V. Koeleria 45 



» V. Sclerocliloa .... 40 



Podospentium 311 



Psllgalacee 5(37 



PoHsonacee I(i2 



Polli II III V. Cri/siipojuil ... 27 

 Polycarpor. ....... 549 



Pulycnom.un 170 



Pulv-:.la 568 



Po]yL,'i)nalurn 94 



Poh/i/oiiatuiti V. Convallaria . » 



Poi Vf;uiimi) 103 



l^olvpogou 32 



Fomaoae 439 



Poimiiis 139 



Portulaca 429 



Portulacaodo 428 



l'osMunia 125 



Fotamaoee 123 



Potaniageton 124 



Potonillla 449 



Poieriiiiu 453 



Prangos 401 



PrenatilliPS 307 



Prenantlies v. Crepis .... 302 

 » V. Lactuca . . . 303 



Primula '-^«^ 



Prlmulacee -05 



PrisiiuilO'yir/ii's v. Specìdaria . 282 



Prunaoee 450 



Pnmrlla v. llii'iieHa . . . 202 



Prunus 457 



Priinus V. Auvjjdalus . . . > 

 Psamma v. Ar.imoplii/la . . . 3iJ 

 Pseudo-Acacia v. Uobinia . . 484 



Psoralea 48;) 



Psi/llium V. Plaatago. . . .181 

 P far mica v Anthemis . . .341 

 Pleroneunim v Cardamine . 5:<0 

 Pterotheca v. F.ndoptcra . . 30 1 

 Ptychotis 401 



