47, 387, pl. 112.
Rhodochlaena, 348.
Rhodoclada, 360.
Rhodocodon, 127.
Rhodocolea, 497.
Rhodolaena, 348.
Rhodorrhiza, 460.
Rhodosepala, 394.
Rhoeo, 123.
Rhoicissus, 346.
Rhoiocarpus, 172.
Rhombonema, 447.
Rhopalocarpus, 372.
Rhopalopilia, 173.
Rhus, 327.
Rhyacophila, 384.
Rhynchelytrum, 82.
Rhynchocalyx, 385.
Rhynchocarpa, 538.
Rhynchosia, 272, 279, 282.
Rhynchosia, 278.
Rhynchospora, 108.
Rhynchostigma, 453.
Rhynchotropis, 262, 272.
Rhynea, 556.
Rhyssolobium, 452.
Rhytachne, 85.
Rhyticarpus, 414.
Rhytidachne, 85.
Rhytiglossa, 512.
Ribes, 234.
Richardia, 117, 521.
Richardsonia, 521.
Ricinodendron, 317.
Ricinus, 313.
Ricotia, 226, 227.
Ridolfia, 413.
Rindera, 467.
Rinorea, 367, pl. 103.
Riocreuxia, 456.
Ritchiea, 215.
Rivea, 461.
Rivea, 461.
Rivina, 187.
Robbairea, 194.
Robinia, 268, 287.
Rochea, 233.
Rochelia, 464.
Rochonia, 573.
Roëlla, 543.
Roemeria, 213.
Roeperocharis, 151.
Roettlera, 501.
Rogeria, 499.
Romulea, 141.
Ropalandria, 200.
Ropalocarpus, 372.
Roridula, 359.
Roripa, 223.
Rosa, 240.
ROSACEAE, 9, 10, 14, 18, 20, 21, 27, 41, 42, 44, 45, 46, 48, 49, 239, pl. 65.
Roscheria, 113.
Rosenia, 555.
Rosmarinus, 471.
Rotala, 384.
Rotantha, 385.
Rothia, 274.
Rottboellia, 85.
Rottboellia, 85.
Roubieva, 182.
Roupellia, 434.
Rourea, 244.
Rourea, 244.
Roureopsis, 608.
Roussea, 234.
Rousseauxia, 397.
Royena, 424.
Rubia, 521.
RUBIACEAE, 17, 54, 65, 66, 67, 516, pl. 144.
Rubus, 242.
Ruckeria, 567, 574.
Ruelingia, 356.
Ruellia, 507.
Ruelliola, 506.
Ruelliopsis, 507.
Ruizia, 357.
Rumex, 178.
Rungia, 513.
Ruppia, 74.
Ruscus, 130.
Ruspolia, 509.
Russelia, 492.
Ruta, 295.
RUTACEAE, 11, 21, 28, 30, 31, 32, 34, 37, 38, 40, 42, 295. pl. 73.
RUTACEAE, 299.
Ruthea, 413.
Rutidea, 519.
Ruttya, 511.
Ruttya, 500.
Rynchospora, 108.
Rytidocarpus, 224.
Rytilix, 607.

Sabicea, 530.
Sabina, 71.
Saccharum, 86.
Saccidium, 153.
Sacciolepis, 82.
Saccocalyx, 479.
Saccoglottis, 292.
Saccolabium, 158.
Saccolabium, 158.
Sacleuxia, 442.
Sageretia, 344.
Sagina, 195.
Sagittaria, 76.
Sagus, 111.
Saintpaulia, 501.
Sakersia, 395.
Salacia, 332, pl. 83.
Salaxis, 416.
Saldania, 609.
Saldinia, 524.
SALICACEAE, 7, 161, pl. 28.
Salicornia, 181.
Salix, 161, pl. 28.
Salsola, 179.
SALSOLACEAE, 179.
Salvadora, 332.
SALVADORACEAE, 18, 30, 50, 332.
Salvia, 476.
Salviacanthus, 512.
Samadera, 300.
Samara, 418.
Sambucus, 533.
Samolus, 419.
SAMYDACEAE, 367.
Sandersonia, 130.
Sanguisorba, 241.
Sanicula, 403.
Sanseverinia, 134.
Sansevieria, 134.
SANTALACEAE, 8, 16, 172, pl. 35.
SANTALACEAE, 173.
Santalina, 526.
Santaloides, 608.
Santiria, 302.
Santiriopsis, 302.
Santulina, 578.
SAPINDACEAE, 9, 12, 13, 18, 26, 28, 31, 32, 40, 335, pl. 85.
SAPINDACEAE, 335, 342.
Sapindus, 337, 340.
Sapindus, 338, 339, 340.
Sapium, 318.
Sapium, 610.
Saponaria, 196.
Saponaria, 196.
Sapota, 423.
SAPOTACEAE, 54, 60, 421, pl. 124.
Sarcocapnos, 212.
Sarcocaulon, 290.
Sarcocephalus, 525.
Sarcochlaena, 347.
Sarcocolla, 380, pl. 108.
Sarcocolla, 380.
Sarcocyphula, 447.
Sarcolaena, 347.
Sarcophrynium, 148.
Sarcophyte, 176.
Sarcopoterium, 241.
Sarcostemma, 447, 448.
Sarothamnus, 266.
Satanocrater, 505.
Satureia, 479.
Satureia, 479.
Satyridium, 151.
Satyrium, 151.
Sauromatum, 118.
Sauvagesia, 359.
Savia, 319, 320.
Savignya, 227.
Saviniona, 352.
Saxifraga, 233.
SAXIFRAGACEAE, 16, 36, 39, 44, 45, 49, 62, 68, 233, pl. 60.
SAXIFRAGACEAE, 235, 236.
Scabiosa, 535.
Scabiosa, 534, 535.
Scaevola, 544.
Scaligeria, 407.
Scandix, 405.
Scaphopetalum, 356.
Schanginia, 179.
Schaueria, 515.
Schefflera, 400.
Schefflerodendron, 288.
Schepperia, 214.
SCHEUCHZERIACEAE, 3, 75.
Schimpera, 225.
Schinus, 328.
Schinziella, 431.
Schismatoclada, 531.
Schismus, 104.
Schistostephium, 578, 579.
Schizobasis, 126.
Schizochilus, 153.
Schizochlaena, 348.
Schizodium, 151.
Schizoglossum, 451.
Schizoglossum, 450.
Schizogyne, 560.
Schizolaena, 348.
Schizostachyum, 88.
Schizostephanus, 449.
Schizostylis, 143.
Schizozygia, 439.
Schlechterella, 442.
Schlechteria, 218, 225.
Schlechterina, 375.
Schmidelia, 336.
Schmidtia, 100.
Schoberia, 179.
Schoenefeldia, 91.
Schoenlandia, 124.
Schoenodendron, 106.
Schoenoplectus, 110.
Schoenoxiphium, 107.
Schoenus, 107.
Schoenus, 108.
Schotia, 254, 256.
Schouwia, 227.
Schranckia, 245.
Schrebera, 426, pl. 126.
Schrebera, 331.
Schubea, 311.
Schultesia, 430.
Schumanniophyton, 529.
Schwabea, 514.
Schwarzkopffia, 153.
Schweinfurthia, 490.
Schwenkia, 481.
Sciadopanax, 401.
Sciadophyllum, 400.
Sciaphila, 79.
Scilla, 127.
Scirpus, 110.
Scirpus, 108.
SCITAMINEAE, 145, 146, 147, 148.
Scleranthus, 192.
Scleria, 106.
Scleria, 106.
Sclerocarpus, 582.
Sclerocarya, 329.
Sclerocephalus, 193.
Sclerochiton, 509.
Sclerochiton, 509.
Sclerochloa, 105.
Sclerodactylon, 607.
Sclerodictyon, 436.
Sclerolaena, 348.
Scleropoa, 105.
Sclerosciadium, 408.
Sclerosperma, 113.
Scolopia, 371.
Scolymus, 545.
Scoparia, 488.
Scopularia, 153.
Scorodophloeus, 253.
Scorpiurus, 260.
Scorzonera, 545.
Scottellia, 368.
Scrophularia, 491.
SCROPHULARIACEAE, 50, 53, 55, 56, 57, 58, 59, 62, 483, pl. 136.
Scutellaria, 472.
Scutia, 344.
Scyphocephalium, 207.
Scyphochlamys, 519.
Scyphogyne, 416.
Scyphosyce, 167.
Scytanthus, 510.
SCYTOPETALACEAE, 33, 38, 62, 63, 68, 357, pl. 95.
Scytopetalum, 358.
Scytophyllum, 330.
Sebaea, 430.
Sebaea, 430.
Sebastiania, 318.
Sebastiania, 610.
Secale, 91.
Secamone, 451.
Secamone, 453.
Secamonopsis, 451.
Sechium, 536.
Securidaca, 308, pl. 78.
Securidaca, 260.
Securigera, 260.
Securinega, 323.
Securinega, 323.
Seddera, 459.
Sedum, 232.
Seemannaralia, 400.
Seetzenia, 294.
Seidelia, 315.
Seidlitzia, 608.
SELAGINEAE, 483, 502.
Selago, 489.
Selinopsis, 412.
Selinum, 409.
Semele, 130.
Semonvillea, 188.
Sempervivum, 232.
Senebiera, 226.
Senecio, 576.
Senecio, 572.
Senra, 352.
Serapias, 152.
Sericocoma, 184, 185.
Sericocoma, 184, 185, 186.
Sericocomopsis, 185.
Sericocomopsis, 185.
Sericorema, 186.
Sericostachys, 185.
Sericostoma, 465.
Seriola, 545.
Serissa, 522.
Serjania, 336.
Serpicula, 399.
Serratula, 550.
Serruria, 171.
Sersalisia, 422, 423.
Sesamothamnus, 498.
Sesamum, 499, pl. 138.
Sesbania, 267, 270.
Seseli, 410, 411.
Seseli, 414.
Sesuvium, 189.
Setaria, 81.
Sevada, 179.
Seychellaria, 79.
Seymeria, 487.
Sherardia, 521.
Sherbournia, 527.
Shutereia, 460.
Shuteria, 279.
Sibangea, 322.
Sibthorpia, 488.
Sicyos, 536.
Sida, 351.
Sideritis, 477.
Sideroxylon, 423.
Sideroxylon, 422.
Siegesbeckia, 582.
Sigmatosiphon, 498.
SILENACEAE, 192.
Silene, 196.
Silybum, 551.
SIMARUBACEAE, 28, 29, 40, 41, 42, 299, pl. 74.
SIMARUBACEAE, 295.
Simarubopsis, 609.
Simbuleta, 491.
Simethis, 132.
Simochilus, 416.
Sinapidendron, 224.
Sinapis, 221, 224.
Siphocodon, 542.
Siphocolea, 497.
Siphomeris, 523.
Siphonantha, 470.
Siphonia, 314.
Siphonochilus, 607.
Siphonoglossa, 512.
Siphonoglossa, 512.
Sison, 413.
Sisymbrium, 224.
Sisymbrium, 217, 218, 223.
Sisyndite, 294.
Sisyranthus, 456.
Sisyrinchium,