#family_Lemnaceae__Lemnaceae__duckweed_family  family of small free-floating thalloid plants
  supertype:  monocot_family__monocotfamily__liliopsid_family__liliopsidfamily  family of flowering plants having a single cotyledon (embryonic leaf) in the seed
  member of:  order_Arales
  member:  duckweed  any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds
  member:  genus_Lemna__Lemna  minute aquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root
     member:  common_duckweed__lesser_duckweed__Lemna_minor  of temperate regions except eastern Asia and Australia
     member:  star-duckweed__Lemna_trisulca  cosmopolitan in temperate regions except North America
  member:  genus_Spirodela__Spirodela  minute aquatic herbs floating on the water surface consisting of a shiny leaflike frond and 2-21 roots
     member:  great_duckweed__greatduckweed__water_flaxseed__waterflaxseed__Spirodela_polyrrhiza  cosmopolitan except South America and New Zealand and some oceanic islands
  member:  genus_Wolffia__Wolffia  minute rootless aquatic herbs having globular fronds floating on or near the water surface and bearing one flower per frond
     member:  watermeal  any of various aquatic plants of the genus Wolffia; throughout warmer regions of the world
  member:  genus_Wolffiella__Wolffiella  minute rootless aquatic herbs having flat fronds floating on or below the water surface and bearing 1-2 flowers per frond; America and Africa
     member:  mud_midget__mudmidget__bogmat__Wolffiella_gladiata  having narrow flat sickle-shaped submerged fronds; North America

No statement uses or specializes family_Lemnaceae; click here to add one.