Pilularia globulifera

Pilularia globulifera, or pillwort, is an unusual species of fern in the family Marsileaceae. It is native to western Europe, where it grows at the edges of lakes, ponds, ditches and marshes, on wet clay or clay-sand soil, sometimes in water up to 30 cm (12 in) deep.

Pilularia globulifera
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Salviniales
Family: Marsileaceae
Genus: Pilularia
Species:
P. globulifera
Binomial name
Pilularia globulifera
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