CUTLEAF CONEFLOWER, Rudbeckia laciniata L. 1, plant in flower; 2, ray flower; 3, seed. Perennial, reproducing by rhizomes and seed. Root system fibrous. Stems 3 to 7 feet (0.9 to 2 m) tall, often whitish. Leaves alternate, deeply pinnately lobed or compound, long-petioled. Flower heads 2 to 4 inches (5 to 10 cm) in diameter on long bare stalks. Ray flowers long, yellow, soon drooping, surrounding a conelike mass of yellowish disk flowers. Seed gray, about 3/8 inch (9 mm) long, straight or curved, 4-angled, with 4 short teeth on one end. Found in rich low ground, pastures, and woodland, especially along streams. Also called goldenglow.