Table 1
Number of retailers surveyed in 2016–2017 (N = 5) and in 2020 (N = 10) selling species included in the Belgian Consensus and Communication Lists and in the European List of Union Concern. The number of retailers where these species were present as stowaways are added between brackets.
| Plant species | Retailers 2016–2017 | Retailers 2020 | Belgian Code | European Regulation |
|---|---|---|---|---|
| Azolla filiculoides | 3 (3) | 2 (6) | Communication List | – |
| Cabomba caroliniana | 1 (0) | 1 (0) | – | 3 August 2016 |
| Crassula helmsii | 1 (0) | 2 (1) | Consensus List | – |
| Cyperus eragrostis | 4 (0) | 9 (2) | Consensus List | – |
| Egeria densa | 5 (0) | 5 (1) | Consensus List | – |
| Eichhornia crassipes | 5 (0) | 0 (0) | – | 3 August 2016 |
| Erythranthe guttata | 3 (0) | 3 (1) | Consensus List | – |
| Gunnera tinctoria | 5 (0) | 5 (0) | – | 2 August 2017 |
| Lagarosiphon major | 1 (0) | 0 (2) | Consensus List | 3 August 2016 |
| Lemna minuta | 0 (1) | 0 (9) | Communication List | – |
| Lysichiton americanus | 3 (0) | 0 (0) | Communication List | 3 August 2016 |
| Salvinia molesta | 4 (0) | 2 (0) | – | 15 August 2019 |
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