Wolffiella oblonga, the saber bogmat, is a species of flowering plant in the subfamily Lemnoideae, the duckweeds.[1] It is native to tropical and subtropical South America, and to a few locales in North America; Panama, Costa Rica, central Mexico, and the US states of California, Louisiana, and Florida.[2] A tiny elongate hydroannual, it prefers quiet waters with moderate nutrient levels.[1]