Species: Wolffia columbiana
Encyclopedia of Puget Sound
Columbia Water-meal, a minute floating aquatic perennial, is among the world's smallest flowering plants. The plant body is rootless and thalloid, with no distinction between stem and leaf. The symmetrical, globular, uniformly green thalli are less than 1.5 mm long, smooth and rounded on the back, and floating just below the surface of the water. The plants rarely flower and for the most part reproduce vegetatively by budding. They often grow in large colonies.
Source: Encyclopedia of Life
Classification
Monocotyledoneae
Arales
Lemnaceae
Wolffia
NatureServe
Classification
Ecology and Life History
Columbia Water-meal, a minute floating aquatic perennial, is among the world's smallest flowering plants. The plant body is rootless and thalloid, with no distinction between stem and leaf. The symmetrical, globular, uniformly green thalli are less than 1.5 mm long, smooth and rounded on the back, and floating just below the surface of the water. The plants rarely flower and for the most part reproduce vegetatively by budding. They often grow in large colonies.
Source: Encyclopedia of Life