Great Duckweed

Duckweed

Spirodela polyrhiza

Size: to 0.1"

Habitat: floating free at surface

Notes: Among the smallest seed plants; important food for many waterfowl.


FE327SS/89 -- OPR-C147-HE-89; CONTACT #22 ON SURVEY H-10284/88; DIVER INVESTIGATION FOUND THE REMAINS OF A LARGE WOODEN SHIP OR BARGE COMPLETELY COLLAPSED UPON ITSELF; A LARGE PILE OF BLOCKS, WHICH RESEMBLED BALLAST BLOCKS, REMAINS; DIVER PNEUMATIC DEPTH GAUGE LEAST DEPTH OF 47 FT TAKEN ON TOP OF PILE OF BLOCKS. (ENTERED MSD 7/91)