Home Keys To Genera List Of Species Search Lemna Spirodela Wolffia Wolffiella Wayne's Word Wolffia arrhiza Dorsal view showing several flat-topped, dark green plants. Wolffia arrhiza Side view of budding plant showing flattened, dorsal surface. Return To The Lemnaceae Home Page Go To Keys To The Genera Of Lemnaceae Go To The List Of Species Of Lemnaceae Go To The List Of .GIF Images Of Lemnaceae Go To The WAYNE'S WORD Home Page All text material & images on these pages copyright © W.P. Armstrong