Wolffia columbiana gallery
Columbian Water-Meal Gallery
Pond Covered with Fronds of Wolffia and Lemna minor
Bloomsburg (Columbia Co)
by George Chamuris on 07/27/2025
Floating Fronds
Fronds lack roots (compare Lemna with 1 root and Spirodela with 2 -- 15 roots per frond). Note the bubbles of photosynthetic oxygen.