Imi cer scuze colegilor care au crezut ca este vorba despre varianta cu frunze spiralate.Cele pe care le am eu au frunzele drepte dar, din cate stiu, tot "Vallisneria spiralis" se cheama.
Mai jos o explicatie de pe tropica.com legata de confuzia de nume :
"Confusing names
Within the in past 25 years, the Vallisneria genus has gone through a major revision. Generally, this means that Vallisneria sold in the aquarium shops belongs to either Vallisneria americana or Vallisneria spiralis. In fact, V. spiralis are not the plants with spiral leaves as indicated by the name. On the contrary, "spiralis" refers to the flower stalk which in spirally shapes in the species V. spiralis. Apparently, the two species only occur side by side few places in the world in for example the Philippines and New Guinea. Australia, however, where one of the species is from, harbours many different species and worldwide, more than 20 species have been described."