| Selenaspidus articulatus |
West Indian Red Scale; Rufous Scale |
| Selenicereus grandiflorus |
Round Stemmed Night Blooming Cereus |
| Selenicereus hamatus |
Moon Cactus; Reina De La Noche |
| Selenicereus undatus |
Night Blooming Cereus; Dragon Fruit |
| Selenothrips rubrocinctus |
|
| Senecio macroglossus |
Wax Vine; Wax Ivy |
| Senecio vulgaris |
Common Groundsel |
| Senna alata |
Winged Cassia; Candle Bush |
| Senna bacillaris |
Climbing Cassia |
| Senna bicapsularis |
Christmas Bush |
| Senna corymbosa |
Argentine Senna; Argentina Senna; Buttercup Bush |
| Senna ligustrina |
Privet Senna |
| Senna occidentalis |
Coffee Senna |
| Senna pendula |
Christmas Senna |
| Senna siamea |
Many-Flowered Cassia; Many Flowered Cassia |
| Senna surattensis |
Shrub Cassia |
| Sepsis neocynipsea |
|
| Serinus canaria |
Atlantic Canary; Canary |
| Setaria palmifolia |
Palm Leaved Panicum Grass; Palm Leaf Grass |
| Setaria parviflora |
Marsh Bristlegrass; Knotroot Foxtail |
| Setaria poiretiana |
Poiret Bristle Grass |
| Setaria verticillata |
Foxtail Grass; Burr Bristle Grass |
| Setaria viridis |
Green Foxtail; Green Bristlegrass |
| Setomorpha rutella |
|
| Sherardia arvensis |
Field Madder; Blue Field Madder |
| Sida acuta |
Common Wireweed |
| Sida rhombifolia |
Cuban Jute; Rhombic-Leaved Sida |
| Sideritis romana |
Simple-Beak Ironwort; Common Siderits |
| Sideroxylon foetidissimum |
Masticbully; False Mastic; Yellow Mastic |
| Sigaloessa bicolor |
|
