Genera and their Authors—continued. 
Schwannia, Endlicher. 
Schweiggeria, Sprengel. 
Schwenkia, Linnzus. 
Sciadophyllum, P. Browne. 
Sciadopitys, Siebold and Zucca- 
rini. 
Scilla, Linnzus. 
Seindapsus, Schott. 
Scirpus, Linneus. 
Secleranthus, Linnzus. 
Scleria, Bergius. 
Sclerothamnus, R. Brown. 
Scolopendrium, Smith. 
Scolymus, Linneus. 
Scoparia, Linnzus. 
Scopolia, Jacquin. 
Scorpiurus, Linnzus. 
Scorzonera, Linneus. 
Scottea, R. Brown. 
Serophularia, Linnzus. 
Seutellaria, Linnzus. 
Seuticaria, Lindley. 
Seba, R. Brown. 
Secale, Linnzeus. 
Secamone, R. Brown. 
Sechium, P. Browne. 
Securidaca, Linnzeus. 
Securigera, De Candolle. 
Securinega, Jussieu. 
Sedum, Linnzeus. 
Seemannia, Regel. 
Selaginella, Sprengel. 
Selago, Linnzus. 
Selenia, Nuttall. 
Selenipedium, Reichenbach, jun. 
Selinum, Linnzus. 
Semecarpnus, Linnzas, jun. 
Semeiandra, Hooker and Arnott. 
Semele, Kunth. 
Sempervivum, Linnzus. 
Senecio, Linnus. 
Sequoia, Endlicher. 
Seraphyta, Fischer and Meyer. 
Serapias, Linnzus. 
Serenoa, J. D. Hooker. 
Sericocarpus, Nees. 
Seringia, J. Gay. 
Serissa, Commerson. 
Serjania, Plumier. 
Serpicula, Linnzus. 
Serratula, Linnzus. 
Serruria, Salisbury. 
Sertifera, Lindley. 
Sesamum, Linnzus. 
Sesbania, Persoon. 
Seseli, Linnzus. 
Sesia, Fabricius. 
Sesleria, Scopoli. 
Sesuvium, Linnzus. 
Setaria, Palisot de Beauvois. 
Severinia, Tenore. 
Sewerzowia, Regel and Schmal- 
hansen. 
Seymeria, Pursh. 
Shepherdia, Nuttall. 
Sibthorpia, Linnzus. 
Sicyos, Linneus. 
Sida, Linnzeus. 
Sidalcea, Asa Gray. 
Sideritis, Linnzus. 
Sideroxylon, Linnzus. 
Siebera, Reichenbach. 
SUPPLEMENT. 
Siegesbeckia, Linnzus. 
Sigmatostalyx, Reichenbach, jun. 
Silaus, Besser. 
Silene, Linneus. 
Silpha, Linnzus. 
Silphium, Linneus. 
Silybum, Geertner. 
Simaba, Aublet. 
Simarouba, Aublet. 
Simethis, Kunth. 
Simmondsia, Nuttall. 
Sinapis, Linnzus. 
Sinningia, Nees. 
Siphoecampylos, Pohl. 
Siphonophora, Koch. 
Sirex, Linnzus. 
Sisymbrium, Linnzus. 
Sisyrinchinm, Linnzeus. 
Sitona, Germar. 
Sium, Linnezus. 
Skimmia, Thunberg. 
Sloanea, Linneus. 
Smeathmannia, Solander. 
Smilacina, Desfontaines. 
Smilax, Linneus. 
Smithia, Aiton. 
Smyrnium, Linnenus. 
Sobralia, Ruiz and Pavon. 
Socratea, Karsten. 
Solandra, Swartz. 
Solanum, Linnzus. 
Solaria, Philippi. 
Soldanella, Linnsus. 
Solenanthus, Ledebour. 
Solenidium, Lindley. 
Solenomelus, Miers. 
Solenophora, Bentham. 
Solidago, Linneus. 
Sollya, Lindley. 
Sonchus, Linnzeus. 
Sonerila, Roxburgh. 
Sonneratia, Linnzus, jun. 
Sophora, Linnzus. 
Sophronitis, Lindley. 
Sopubia, Hamilton. 
Sorghum, Persoon. 
Sorindeia, Thouars. 
Sorocephalus, R. Brown. 
Sowerbea, Smith. 
Sparaxis, Ker. 
Sparganium, Linnzus. 
Sparmannia, Linnzus, jun. 
Spartina, Schreber. 
Spartium, Linnzus. 
Spartothamnus, Allan Cunningham. 
Spatalla, Salisbury. 
Spathantheum, Schott. 
Spathegaster, Hartig. 
Spathelia, Linnzus. 
Spathicarpa, Hooker. 
Spathiphyllum, Schott. 
Spathodea, Palisot de Beauvois. 
Spathoglottis, Blume. 
Specularia, Heister. 
Speirantha, Baker. 
Spermacoce, Linnus. 
Sphacele, Bentham. 
Spheralcea, St. Hilaire. 
Spherolobium, Smith. 
Spherophysa, De Candolle. 
Sphezropteris, Wallich. 
Sphagnum, Dillenius. 
269 
Sphenandra, Bentham. 
Sphenodesma, Jack. 
Spigelia, Linnzeus. 
Spilanthes, Linnzus. 
Spiloscma, Stephens. 
Spinacia, Linnzus. 
Spirwa, Linnzus. 
Spiranthera, St. Hilaire. 
Spiranthes, L. C. Richard. 
Spironema, Lindley. 
Spondias, Linnzus. 
Sporobolus, R. Brown. 
Spraguea, Torrey. 
Sprekelia, Heister. 
Sprengelia, Smith. 
Spyridium, Fenzl. 
Staavia, Thunberg. 
Stachys, Linneus. 
Stachytarpheta, Vahl. 
Stachyurus, Siebold and Zuccarini. 
Stackhousia, Smith. 
Stezhelina, Linneus. 
Stangeria, T. Moore. 
Stanhopea, Frost. 
Stanleya, Nuttall. 
Stapelia, Linneus. 
Staphylea, Linnzus. 
Statice, Linnzus. 
Stanuntonia, De Candolle. 
Stauranthera, Bentham. 
Stauropsis, Reichenbach, jun. 
Staurostigma, Scheidweiler. 
Stelis, Swartz. 
Stellaria, Linnzeus. 
Stellera, Linnzeus. 
Stemodia, Linnzus. 
Stemona, Loureiro. 
Stenanthera, R. Brown. 
Stenanthium, Asa Gray. 
Stenia, Lindley. 
Stenocarpus, R. Brown. 
Stenochilus, R. Brown. 
Stenocoryne, Lindley. 
Stenoglossum, Humboldt, Bonpland, 
and Kunth. 
Stenoglottis, Lindley. 
Stenomesson, Herbert. 
Stenoptera, Presl. 
Stenospermation, Schott. 
Stenostomum, Gzertner. 
Stenotaphrum, Trinius. 
Stephanandra, Siebold and Zucca- 
rini. 
Stephania, Loureiro. 
Stephanocoma, Lessing. 
Stephanomeria, Nuttall. 
Stephanotis, Thouars. 
Sterculia, Linnzeus. 
Stereosandra, Blume. 
Sterigma, De Candolle. 
Steriphoma, Sprengel. 
Sternbergia, Waldstein and Kitaibel. 
Steudnera, C. Koch, 
Stevensonia, Duncan. 
Stevia, Cavanilles. 
Stifftia, Mikan. 
Stigmaphyllon, A. Jussieu. 
Stillingia, Linneeus. 
Stipa, Linnzus. 
Stokesia, L’Héritier. 
Stranvesia, Lindley. 
Stratiotes, Linneus. 
