Baldellia

Baldellia is a genus of aquatic plants commonly known as lesser water-plantains. It includes three species found across much of Europe and the Mediterranean from Ireland and the Canary Islands to Turkey and Estonia. The genus is named in honor of the Italian nobleman Bartolomea Bartoloni-Baldelli. "Baldellia" is very closely related to "Echinodorus".
Description.
Leaves aerial, elliptical to lanceolate or linear-lanceolate. Flowers hermaphrodite, in 1 - 3 whorls in umbels or racemes, or long-pedunculate in leaf-axils. Stamens 6. Carpels numerous, spirally arranged in a globose head, free, each with 1 ovule; styles apical. Fruitlets achenial, longitudinally 5-ribbed (3 dorsal ribs and 2 closely approximated ventral ribs), with a short, apical beak. 2n=16.
Variable in form according to ecological conditions.
Species.
Three species are recognized: