| Sabal | PDF 71Kb | |
| Sabica | PDF 47Kb | Could not verify this genus. Possibly Sabiciea |
| Sabina | PDF 293Kb | Most cards originally labelled Juniperus |
| Sagittaria | PDF 78Kb | |
| Salisburia | PDF 832Kb | |
| Salix | PDF 33.5Mb | |
| Salvia | PDF 620Kb | |
| Sambucus | PDF 736Kb | |
| Sanguisorba | PDF 45Kb | |
| Santalum | PDF 141Kb | |
| Santolina | PDF 307Kb | |
| Sapindus | PDF 485Kb | One card labelled Sapinous |
| Sapium | PDF 716Kb | |
| Saponaria | PDF 71Kb | |
| Sarcococca | PDF 77Kb | |
| Sarcostemma | PDF 48Kb | |
| Satureja | PDF 78Kb | |
| Saxifraga | PDF 985Kb | |
| Scabiosa | PDF 71Kb | |
| Schefflera | PDF 47Kb | |
| Schinus | PDF 999Kb | |
| Schizophragma | PDF 67Kb | |
| Schleichera | PDF 50Kb | |
| Schotia | PDF 64Kb | |
| Sciadopitys | PDF 262Kb | Some cards labelled Sciadopitye |
| Scilla | PDF 156Kb | |
| Scleranthus | PDF 86Kb | |
| Scutellaria | PDF 87Kb | |
| Scutia | PDF 46Kb | |
| Sebastiana | PDF 248Kb | |
| Securinega | PDF 47Kb | |
| Sedum | PDF 389Kb | |
| Selago | PDF 101Kb | One card labelled Silaga |
| Selenicereus | PDF 44Kb | |
| Selinia | PDF 37Kb | Card labelled Gelinia |
| Sempervivum | PDF 123Kb | |
| Senecio | PDF 754Kb | |
| Sequoia | PDF 3.70Mb | |
| Serissa | PDF 48Kb | |
| Serratula | PDF 43Kb | |
| Sesamum | PDF 45Kb | |
| Sesbania | PDF 280Kb | |
| Sheperdia | PDF 236Kb | Some cards labelled Sheppardia |
| Sibiraea | PDF 46Kb | |
| Sidalcea | PDF 171Kb | |
| Sideroxylon | PDF 43Kb | |
| Silene | PDF 193Kb | |
| Simmondsia | PDF 237Kb | |
| Sinarundinaria | PDF 106Kb | |
| Sisyrinchium | PDF 102Kb | |
| Skimmia | PDF 52Kb | |
| Smilacina | PDF 46Kb | |
| Solandra | PDF 56Kb | |
| Solanum | PDF 654Kb | |
| Solidago | PDF 238Kb | |
| Sollya | PDF 197Kb | |
| Sophora | PDF 3.08Mb | Also see Edwardsia: PDF 545Kb |
| Sorbaria | PDF 46Kb | |
| Sorbus | PDF 1.63Mb | |
| Sparaxis | PDF 108Kb | |
| Sparmannia | PDF 247Kb | |
| Spartium | PDF 4.14Mb | |
| Spathiphyllum | PDF 39Kb | |
| Spathodea | PDF 93Kb | |
| Spathaeralcea | PDF 209Kb | |
| Spiraea | PDF 18.7Mb | Some cards labelled Spirea |
| Spondias | PDF 49Kb | |
| Sprekelia | PDF 106Kb | |
| Stachys | PDF 44Kb | |
| Stachyurus | PDF 64Kb | |
| Staphylea | PDF 585Kb | |
| Statice | PDF 83Kb | |
| Stauntonia | PDF 45Kb | |
| Stephenandra | PDF 165Kb | |
| Sterculia | PDF 3.19Mb | Index card labelled Stercula |
| Sternbergia | PDF 349Kb | |
| Stewartia | PDF 499Kb | |
| Stokesia | PDF 62Kb | |
| Stomatium | PDF 88Kb | |
| Stranvaesia | PDF 487Kb | |
| Strelitzia | PDF 106Kb | |
| Streptanthera | PDF 140Kb | |
| Streptocarpus | PDF 203Kb | |
| Stromatium | PDF 46Kb | Could not verify this genus |
| Strombocactus | PDF 47Kb | |
| Styrax | PDF 884Kb | |
| Sutera | PDF 90Kb | |
| Sutherlandia | PDF 52Kb | |
| Suttonia | PDF 48Kb | |
| Swainsona | PDF 329Kb | Cards labelled Swainsonia |
| Swertia | PDF 47Kb | |
| Swietenia | PDF 92Kb | |
| Symphoricarpos | PDF 708Kb | Some cards labelled Symphoricarpus |
| Symphytum | PDF 50Kb | |
| Symplocos | PDF 239Kb | |
| Synadenium | PDF 45Kb | |
| Syncarpia | PDF 495Kb | |
| Syringa | PDF 7.70Mb | |
| Miscellaneous - Genus S | PDF 269Kb | |
