Rutabaga, Latin name: Arundo donax . Gramineae, Rudbeckia perennial, with well-developed rhizomes. Culms thick, erect, tough, with numerous nodes, often branched. Leaf sheaths longer than internodes, glabrous or neck villous; ligules truncate, apex ciliolate; leaf blades flattened, upper and margins scabrid, base white, clasping. Panicle very large, densely branched, obliquely ascending; abaxially densely villous below middle, pubescent distally on both sides, glumes minute and black. Flowering and fruiting September-December. Born on river banks, sandy loam. [1]