153 
Poiitecleriaceíie, 43 
Porophyllum, 131 
Portulaca, 57 
Portulacacea?, 57 
Potamogetón, 23 
Potamogetoiiaceíie, 23 
Pi'imulaceíe, 93 
Prosopis, 63 
Psidium, 90 
Psittacanthus, 49 
Psycliotria^ 118 
Ptcris, 20 
Prei'ocarpus, 69 
Ptcrucaulon, 128 
Quebrachia, 76 
Raiiuiiculaee¿ie, 59 
Ranunculus, 59 
Rapanea, 92 
Relbiinium, 119 
Rliamnaceíe, 78 
Rivina, 56 
Roí asi a, 97 
Rotboellia, 25 
Roulinia, 96 
Rubiáceas, 116 
Ruellia, 114 
Rumex, 51 
Ruprechtia, 52 
Ruppia, 23 
Rynchosia, 69 
Rynchospora, 39 
Sageretia, 78 
Salicacefe, 47 
Salicornia, 53 
Salix, 47 
Salvia, 103 
Salviiiiacea^, 21 
Samolus, 93 
Saiitalacteíie, 50 
Síij>iii<laceíe, 77 
Sapium, 74 
Sapotaeeai, 93 
Sarcostemma, 96 
Schinopsi^;, 76 
Schinus, 76 
Sehizaeaceíe, 21 
Schubertia, 95 
Schwenckia, 109 
Scirpus, 38 
Solería, 39 
Scoparia, 111 
Scrophulariaceíe, 110 
Scuiellaria, 102 
Senecio, 131 
Serjania, 78 
Sesbania, 67 
Sesiivium, 56 
Setaria, 32 
Sida, 80 
Sinningia, 113 
Siphonoglossa, 116 
Si^yrinchium, 44 
Smilax, 43 
Solaiiaceíe. 104 
Solanum, 104 
Solidago, 126 
Sonchus, 132 
Sorocea, 43 
Spermacoce, 119 
Splimralcea, 83 
Spigelia, 94 
Sporoboius, 33 
Stemodia, 110 
SteiuocUacra, 110 
Stenorrhynchns, 45 
Sterculiaceíie, 85 
Stevia, 123 
Stigmatophyllon, 71 
Stillingía, 74 
Snseda, 53 
Synandrospadix, 40 
Tabebnia. 113. 
Tecoma, 113 
Telanthera, 54 
Tessaria, 127 
Tetragonia, 57 
Teucrium, 102 
Thalia, 45 
Thevetia, 94 
Tiliaeeíe, 79 
Tillandsia, 41 
Tissa, 58 
Torulinium, 37 
Tournefortia, 99 
