322 



Trans. Acad. Scu of St. Louis. 



Oracardia 30 



Orchidaceae 120 



Ornlthopus 92, 118, 168 



Orobu3 92, 114 



Orthoceras 45, 47-8, 51. pL 5 



Orthothetes 13, 47, 49 



Oxytropis 166, 218, 259. pi. 13 



Faeonia 124-5 



Pahudia 117 



Palaeoneilo 32, 47-51. pi. 4 



Panicum 130 



Papaveraceae 131 



Paris 126 



Parkinsonia 95, 124 



Parochetus 144 



Parosela (156) 



Pelargonium 96 



Pernopecten 24-8, 47-8. pi. 4 



Petalostemon 157, 218, 259, 262, 



267.pl. 12, 28 

 Petunia 96 



Phanerotinus 43, 47-8, 51. pi. 5 

 Phaseolus 91-4, 97, 99, 111-113, 116, 



127-9, 133, 188, 191, 194, 220, 



223, 360, 262, 272. pZ. 21,27 

 Phillipsia 46 

 Phoenix 125 



Physostigma 91, 94, 108, 129 

 Picea xxiii 

 Pilularia 300 

 Pinus xxii, 96, 132, 298 

 Pisum 92-3, 97, 114, 116-118, 127-9, 



187, 219, 223, 262, 272. pi. 30 

 Pithecolobium 110, 117 

 Pittosporaceae 181 

 Plantaginaceae 120 

 Plantago 123, 133 

 Platyschisma 42, 50, 51. pi. 5 

 Pleurotomaria 41, 50 

 Polemoniaceae 120 

 Polychaerus 298 

 Polygalaceae 131 

 Polygonatum 122-3 

 Pongamia 110 

 Porcellia43, 47-8, 51.i)Z. 5 

 Portulacaceae 131 

 Prenanthes 1 

 Primula 124 

 Proctus 46 

 Productella 17, 47-9 



Productus 17 



Promacrus 84-5, 47-8, 50. pi. 2, 3 



Prosopis 109, 213, 222, 260, 278. pi. 



18 

 Prunus 124 



Psoralea 152, 218, 258, 271. pi. 11 

 Pteris 298, 300 

 Ptychodesma 28-9, 51. pi. 4 

 Pyrus 123, 132 



Qnamoclit 97-8 

 Quercus 94 



Ramalina 121 



Rana 298 



Ranunculaceae 131 



Resedaceae 92, 131 



Rhamnaceae 101, 119 



Rhamnus 106 



Rhipidomella 15, 47-8, 5\. pi. 4 



Rhipsalis xviii 



Rhynchoaia 128, 201, 203, 221, 260, 



263. pi. 1 7, 34 

 Ricinus 94 



Robinia 123-4, 162, 218. pZ. 14 

 Ruellia 126,133 



Saccharomyces 124 



Salix xxi, 69 



Sanguinolites 36, 47, 49, 60. pi. 3 



Sarraceniaceae 131 



Scalarituba 12, h\.pl.6 



Schizodus 33, 47, 49, 61. pi. 3 



Schizomycetes 120 



Schizoptioria 13, 47, 49, 51. pi. 4 



Schotia 120-122, 128-9 



Schrankia 215, 222, 260. pi. 18 



Scilla 123-4 



Scitamineae 101, 107 



Sesbania 110 



Sicyos 103-4, 262-3. pi. 31, 35 



Silene 123 



Silphium 3, 6 



Simaruba 123 



Sisymbrium 126, 130 



Smilacina 125 



Soja 128, 197 



Solanaceae 92 



Solidago 3-6 



Sonchus 1, 8 



Sophora 138, 217, 258, 21\.pL 10 



