erythronium: perennial bulbous herbs most of northern United States: dogtooth violet; adder's tongue; trout lily; fawn lily
liliid monocot genus: genus of monocotyledonous plants comprising mostly herbs having usually petaloid sepals and petals and compound pistils
biosafety level 4: exposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapy