| Località di raccolta | | Località | Dudzele (Belgium, prov. West-Vlaanderen), artificial small lake nearby the new railroad from Zeebrugge to Brugge, IFBL B2.51.42, alt. < 5 m, shallow, probably somewhat brackish water (soil consisting of silty fine sand), together with Zannichellia palustris subsp. pedicellata very abundant |
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