Rudbeckia Linnaeus (Q2782)
Rudbeckia is a taxon with the rank genus within the tribe Heliantheae
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Rudbeckia Linnaeus
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Rudbeckia is a taxon with the rank genus within the tribe Heliantheae
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Statements
taxon/id/Rudbeckia Linnaeus
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Rudbeckia Linnaeus
Rudbeckia
Linnaeus
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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Annuals, perennials, subshrubs, or shrubs [perennials], mostly 10–80 (–200) cm.
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Stems erect, branched distally or ± throughout.
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petiolate or sessile;
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blades mostly lanceolate to oblanceolate overall, usually 1–3-pinnately lobed or pinnatisect, ultimate margins toothed or entire, faces glabrous or hairy (oil-glands scattered and/or submarginal).
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Heads radiate or discoid, borne singly or in ± corymbiform arrays.
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Involucres narrowly cylindric or fusiform to turbinate or broadly campanulate, 1–12+ mm diam.
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Phyllaries persistent, 3–21+ in 1–2 series (connate to 7/8+ their lengths, usually streaked and/or dotted with oil-glands).
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Receptacles convex to conic, smooth or finely pitted, epaleate.
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Ray-florets 0 or 1–8 (–13+) (to 100+ in “double” cultivars), pistillate, fertile (except “double” cultivars);
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corollas yellow or orange, redbrown (with or without yellow/orange), or white.
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Disc-florets 6–120+, bisexual, fertile;
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corollas greenish yellow to orange, sometimes tipped with red or redbrown, tubes much longer than or about equaling funnelform throats, lobes 5, deltate to lance-linear (equal or 2 sinuses deeper than others).
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Cypselae narrowly obpyramidal or fusiform-terete, sometimes weakly flattened, glabrous or hairy;
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pappi persistent, of 2–5 (–10) dissimilar, distinct or connate scales in ± 1 series: 0–5+ oblong to lanceolate, erose-truncate or laciniate plus 0–2 (–5) longer, subulate to aristate.
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branched
distally; distally; more or less throughout; throughout
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mostly lanceolate
oblanceolate
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fusiform
turbinate or broadly campanulate
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lanceolate erose-truncate or laciniate
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lanceolate erose-truncate or laciniate
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in more or less corymbiform arrays
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