Trillium ludovicianum  Trillium ludovicianum, the Louisiana wakerobin or Louisiana trillium, is a species of flowering plant in the family Melanthiaceae. It is found only in the south-central United States, in Louisiana, Mississippi, and eastern Texas. "Trillium ludovicianum" is a perennial herbaceous plant up to 12 inches (30 cm) tall. Flowers are dark red, purple, or dark green, sometimes with irregular markings. The plant grows in moist woods and floodplains.