genus lepidobotrys: a genus of dicotyledonous trees belonging to the family Lepidobotryaceae
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
hydrilla: submersed plant with whorled lanceolate leaves and solitary axillary flowers; Old World plant naturalized in southern United States and clogging Florida's waterways