Pier Antonio Micheli

Vallisneria (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Australia, Europe, and North America. Vallisneria is a submerged plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in clusters from their roots. The leaves have rounded tips, and definite raised veins. Single white female flowers grow to the water surface on very long stalks. Male flowers grow on short stalks, become detached, and

Eugenia is a genus of flowering plants in the myrtle family Myrtaceae. It has a worldwide, although highly uneven, distribution in tropical and subtropical regions. The bulk of the approximately 1,100 species occur in the New World tropics, especially in the eastern Brazil's northern Andes, the Caribbean, and the Atlantic Forest (coastal forests). Other centers of diversity include New Caledonia and Madagascar. Many species in the Old World have received a new classification into the genus Syzygium. All species are woody evergreen trees and shrubs. Several are grown as ornamental plants for

Zannichellia (common name horned pondweed) is a genus of submerged aquatic flowering plant, with threadlike leaves and tiny flowers. It is fully adapted to an aquatic life cycle, including underwater pollination. There are perhaps five species, including Zannichellia palustris. The genus is named after Gian Girolamo Zannichelli (1662–1729), Italian botanist.

Drypis is a flowering plant genus in the family Caryophyllaceae.