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Rudbeckia (/ r ʌ d ˈ b ɛ k i ə /) [4] is a plant genus in the Asteraceae or composite family. [ 5 ] [ 6 ] Rudbeckia flowers feature a prominent, raised central disc in black, brown shades of green, and in-between tones, giving rise to their familiar common names of coneflowers and black-eyed-susans .
Rudbeckia hirta is an upright annual (sometimes biennial or perennial) growing 30–100 cm (12–39 in) tall by 30–45 cm (12–18 in) wide.It has alternate, mostly basal leaves 10–18 cm long, covered by coarse hair, with stout branching stems and daisy-like, composite flower heads appearing in late summer and early autumn.
Rudbeckia subtomentosa, the sweet coneflower, [1] is a flowering plant in the family Asteraceae and is found in the central United States. Growing to 1.5 m (4.9 ft) tall, it is an erect herbaceous perennial that produces brown centered, yellow daisy-like flowers from late summer to fall. It flowers best in a sheltered position with full sun. [2]
Rudbeckia grandiflora, commonly called rough coneflower, [1] is a species of flowering plant in the family Asteraceae. Description. Growing wild in Arkansas.
Rudbeckia auriculata is conspicuous in the wild due to its extreme height (occasionally over 3 m (9.8 ft)) as long as the morphological differences with Rudbeckia laciniata L. such as its dissected leaves are noted. [7] R. auriculata is a long-lived perennial.
Rudbeckia triloba is a biennial or short-lived perennial herbaceous plant that grows to a height of 5 ft (150 cm) with a spread of up to 2.5 ft (75 cm). The primary stem has numerous branches, giving the plant an open, bushy appearance. The stems and branches are hairy and medium green, sometimes with a reddish color. The leaves are also hairy.
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