| Solanaceae | Solanum glaucophyllum Desf. | 2 | M-OR | |
| Solanaceae | Solanum mauritianum Scop. | 2 | M-OR | |
| Solanaceae | Solanum sisymbriifolium Lam. | 3 | M-OR | |
| Asteraceae | Solidago chilensis Meyen var. chilensis | 2 | M-OR | |
| Asteraceae | Sommerfeltia spinulosa (Spreng.) Less. | 1 | P | OR |
| Poaceae | Sporobolus indicus (L.) R. Br. | 1.3 | OR | |
| Poaceae | Steinchisma hians (Elliott) Nash | 3 | FO-OR | |
| Poaceae | Stenotaphrum secundatum (Walter) Kuntze | 3 | FO-OR | |
| Asteraceae | Stevia satureiifolia (Lam.) Sch. Bip. ex Klotzsch var. satureiifolia | 1 | M-OR | |
| Poaceae | Stipa papposa Nees | 3 | OR | |
| Arecaceae | Syagrus romanzoffiana (Cham.) Glassman | 1 | OR | |
| Asteraceae | Symphyotrichum squamatum (Spreng.) G.L. Nesom | 2 | OR | |
| Asteraceae | Tessaria absinthioides (Hook. & Arn.) DC. | 2 | OR | |
| Thelypteridaceae | Thelypteris sp. | 1 | OR | |
| Bromeliaceae | Tillandsia aeranthos (Loisel.) L.B. Sm. | 5 | M-OR | |
| Bromeliaceae | Tillandsia usneoides (L.) L. | 5 | M | |
| Commelinaceae | Tradescantia fluminensis Vell. | 2 | M-OR | |
| Euphorbiaceae | Tragia volubilis L. | 3 | M | |
| Fabaceae | Trifolium polymorphum Poir. | 3 | FO-OR | |
| Loranthaceae | Tripodanthus acutifolius (Ruiz & Pav.) Tiegh. | 1, 2 | M-OR | |
| Asteraceae | Trixis praestans (Vell.) Cabrera | 1 | OR | |
| Typhaceae | Typha domingensis Pers. | 2 | M-OR-Fi | |
| Typhaceae | Typha sp. | 1.2 | OR | |
| Boraginaceae | Varronia curassavica Jacq. | 1.2 | P | OR |
| Verbenaceae | Verbena bonariensis L. | 2 | M-OR | |
| Verbenaceae | Verbena intermedia Gillies & Hook. ex Hook. | 3 | M | |
| Verbenaceae | Verbena montevidensis Spreng. | 1 | M | |
| Fabaceae | Vigna luteola (Jacq.) Benth. | 2 | FO-OR | |
| Poaceae | Vulpia australis (Nees ex Steud.) C.H. Blom | 3 | OR | |
| Campanulaceae | Wahlenbergia linarioides (Lam.) A. DC. | 4 | OR | |
| Lemnaceae | Wolffia brasiliensis Wedd. | 2 | OR | |
| Salicaceae | Xylosma tweediana (Clos) Eichler | 1 | OR | |
| Xyridaceae | Xyris jupicai Rich. | 2 | M | |
| Rutaceae | Zanthoxylum fagara (L.) Sarg. | 1 | M-OR-T | |
| Rutaceae | Zanthoxylum rhoifolium Lam. | 1 | M-OR | |
| Rutaceae | Zanthoxylum sp. | 1 | ||
| Amaryllidaceae | Zephyranthes sp. | 3 | OR | |
| Poaceae | Zizaniopsis bonariensis (Balansa & Poitr.) Speg. | 2 | Fi |