Genus of flowering plants in the daisy family Asteraceae
Black-eyed-susans Coneflowers
Rudbeckia hirta
Scientific classification
Kingdom:
Plantae
Clade:
Tracheophytes
Clade:
Angiosperms
Clade:
Eudicots
Clade:
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Tribe:
Heliantheae
Subtribe:
Rudbeckiinae
Genus:
Rudbeckia L. 1753 not Adans. 1763 (Combretaceae)
Type species
Rudbeckia hirta
L.[1][2]
Synonyms[3]
Dracontopsis Lem.
Heliophthalmum Raf.
Dracopsis Cass.
Dracopis (Cass.) Cass.
Centrocarpha D.Don
Obeliscotheca Vaill. ex Adans.
Rudbeckia (/rʌdˈbɛkiə/)[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. All are native to North America, and many species are cultivated in gardens for their showy yellow or gold flower heads that bloom in mid to late summer.
The species are herbaceous, mostly perennial plants (some annual or biennial) growing to 0.5–3.0 m tall, with simple or branched stems. The leaves are spirally arranged, entire to deeply lobed, and 5–25 cm long. The flowers are produced in daisy-like inflorescences, with yellow or orange florets arranged in a prominent, cone-shaped head; "cone-shaped" because the ray florets tend to point out and down (are decumbent) as the flower head opens.
A large number of species have been proposed within Rudbeckia, but most are now regarded as synonyms of the limited list given below.
Several currently accepted species have several accepted varieties. Some of them (for example the black-eyed susan, R. hirta), are popular garden flowers distinguished for their long flowering times. Many cultivars of these species are known.
Rudbeckia is one of at least four genera within the flowering plant family Asteraceae whose members are commonly known as coneflowers; the others are Echinacea,
Dracopis, and Ratibida.
Rudbeckia species are eaten by the caterpillars of some Lepidoptera species including cabbage moths and dot moths.
^lectotype designated by N. L. Britton et A. Brown, Ill. Fl. N.U.S. ed. 2. 3: 469 (1913)
^Linnaeus, Carl von. 1753. Species Plantarum 2: 906-907 in Latin
^Urbatsch, Lowell E.; Cox, Patricia B. "Rudbeckia". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Rudbeckia (/rʌdˈbɛkiə/) is a plant genus in the Asteraceae or composite family. Rudbeckia flowers feature a prominent, raised central disc in black, brown...
Rudbeckia hirta, commonly called black-eyed Susan, is a North American flowering plant in the family Asteraceae, native to Eastern and Central North America...
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Rudbeckia triloba, the browneyed or brown-eyed susan, thin-leaved coneflower or three-leaved coneflower, is a species of flowering plant in the family...
resemble. The epithet purpurea means 'reddish-purple'. Originally named Rudbeckia purpurea by Linnaeus in 1753 in Species plantarum 6, it was reclassified...
Rudbeckia maxima, the great coneflower, is a flowering plant in the family Asteraceae, which is used as an ornamental plant. They can reach a maximum...
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Thomas 1818. Genera of North American Plants 2: 178 as Rudbeckia purpurea var. serotina Nutt. Tropicos, Rudbeckia purpurea var. serotina Nutt v t e v t e...
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Rudbeckia missouriensis, the Missouri coneflower, is a flowering plant in the family Asteraceae and is found mostly in the Ozarks of Missouri and Arkansas...
Rudbeckia auriculata (Perdue) Kral., commonly known as the eared coneflower, is a species of flowering plant in the Asteraceae Bercht. & J.Presl., native...
by Linnaeus in 1753, and this specimen as one of five species of Rudbeckia, Rudbeckia purpurea. Conrad Moench subsequently reclassified it in 1794 as the...
Rudbeckia alpicola, the showy coneflower, Washington coneflower, or Wenatchee mountain coneflower. It is a perennial flowering plant native to Washington...
monotypic genus with Dracopis amplexicaulis (clasping coneflower; syn. Rudbeckia amplexicaulis) the sole species. It is native to North America. It is...
Rudbeckia subtomentosa, the sweet coneflower, is a flowering plant in the family Asteraceae and is found in the central United States. Growing to 1.5 m...
genera of flowering plants: In the family Asteraceae Dracopis Echinacea Rudbeckia Ratibida In the family Proteaceae Isopogon Cornflower This page is an...
Rudbeckia californica is a species of flowering plant in the family Asteraceae, known by the common name California coneflower. It is native to California...
Rudbeckia graminifolia, the grassleaf coneflower, is a species of flowering plant. It grows in parts of the Florida Panhandle. It produces tubular disc...
1757 as Rudbeckia foliis oppositis hirsutis ovato-acutis, calyce imbricatus, radii petalis pistillatis. Linné realised that it was not a Rudbeckia. The garden...
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