Elatine hydropiper subsp. campylosperma (Seub.) P. Fourn., Quatre Fl. France: 442. 1936 Elatine hydropiper subsp. campylosperma (Seub.) P. Fourn., Quatre Fl. France: 442. 1936Taxon for this nameElatine hydropiper subsp. campylosperma (Seub.) P. Fourn., Quatre Fl. France: 442. 1936