322 



Trans. Acad. Set. of iSt. Louis. 



Oracardia 30 



Orchidaceae 120 



Ornithopus 92, 118, 168 



Orobus 92, 114 



Orthoceras 45, 47-8, 51. pi. 5 



Orthothetes 13, 47, 49 



Oxytropis 166, 218, 259. pi. 13 



Faeonia 124-6 



Pahudia 117 



Palaeoneilo 32, 47-51. pl.4 



Panicum 130 



Papaveraceae 131 



Paris 125 



Parkinsonia 95, 124 



Parochetus 144 



Parosela (156) 



Pelargonium 96 



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



Petalostemon 157, 218, 259, 2G2, 



267. i)3. 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, 260, 262, 272. pi. 21, 27 

 PhlUipsia 46 

 Phoenix 125 



Physostigma 91, 94, 108, 129 

 Picea xxiii 

 Pllularia 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 131 

 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 

 Porcellia 43, 47-8, 51. pi. 6 

 Portulacaceae 131 

 Prenanthes 1 

 Primula 124 

 Proctus 46 

 Productella 17, 47-9 



Productus 17 



Promacrus 34-5, 47-8, 60. p.'. 2, 3 



Prosopis 109, 213, 222, 260, 21Z.pl. 



18 

 Prunus 124 



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

 Pterin 298, 300 

 Ptychodesma 28-9, 51. pi. 4 

 Pyrus 123, 132 



Qaamoclit 97-8 

 Qaercus 94 



Ramalina 121 



Rana 298 



Ranunculaceae 131 



Resedaceae 92, 131 



Rhamnaceae 101, 119 



Rhamnus 106 



Rhipidomella 16, 47-8, 51, pi. 4 



Rhipsalis xviii 



Rhynchosia 128, 201, 203, 221, 260, 



263. pi. 17, 34 

 Ricinus 94 



Robinia 123-4, 162, 2l8.pl. 14 

 Ruellia 126, 133 



Saccliaromyces 124 



Salix xxi, 69 



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



Sarraceniaceae 131 



Scalarituba 12, 51. pi. 6 



Schizodus 33, 47, 49, h\. pi. 3 



Schizomycetes 120 



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



Scholia 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 



Silphiura 3, 6 



Simaruba 123 



Sisymbrium 126, 130 



Smilacina 125 



Soja 128, 197 



Solanaceae 92 



Solidago 3-6 



Sonchus 1, 8 



Sophora 138, 217, 258, 271. p/. 10 



