In other forms such as Elodea, Nitella, Chara, &c., where the cytoplasm is mainly restricted to the periphery of the sap vacuole and lining the cell wall, the streaming movement is exhibited in one direction only.
WATER-THYME, known botanically as Elodea canadensis, a small submerged water-weed, native of North America.
Elodea is a member of the monocotyledonous natural order Hydrocharideae.
Is represented by Elodea canadensis or water-thyme,which has been introduced into the British Isles from North America.
Elodea has polyFIG.