Limnanthemum crenatum, Limnanthemum nymphoides.
Limnanthemum crenatum F. Muell. Gentianeae
Australia. The small, round tubers are roasted for food.
Limnanthemum nymphoides Hoffmgg. & Link.
Europe and northern Asia. This water plant, with its yellow flowers and round leaves, was formerly eaten in China in spite of its bitterness.
Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.