Helenium Linnaeus (Q2704)
Helenium is a taxon with the rank genus within the tribe Helenieae
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Helenium Linnaeus
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Helenium is a taxon with the rank genus within the tribe Helenieae
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Statements
taxon/id/Helenium Linnaeus
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Helenium Linnaeus
Helenium
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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Stems 1 (–10), erect, simple or branched distally (usually ± winged by decurrent leaf-bases), glabrous or sparsely to densely hairy.
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petiolate or sessile;
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blades mostly elliptic, lanceolate, linear, oblanceolate, oblong, ovate, or spatulate, often pinnately lobed or pinnatifid, ultimate margins entire or toothed, faces glabrous or sparsely to densely hairy, gland-dotted.
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Heads radiate or discoid, borne singly or (2–300+) in paniculiform to corymbiform arrays.
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Involucres ± globose, hemispheric, obconic, or ovoid, 4–34 mm diam.
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Phyllaries persistent, 9–34 (–40+) in (1–) 2 [–3] series (distinct or proximally connate, usually reflexed in fruit, glabrous or sparsely to densely hairy, gland-dotted).
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Receptacles conic, ± globose, hemispheric, or ovoid, pitted (glabrous), epaleate (rarely bearing setiform enations).
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Ray-florets 0 or 7–34, pistillate and fertile or neuter;
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corollas yellow, yellow with purple streaks, reddish-brown to red proximally and yellow distally, or reddish-brown to red or purple throughout.
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Disc-florets 75–1000+, bisexual, fertile;
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corollas yellow, purple, or yellow to yellow-green proximally and yellowbrown, brown or reddish-brown to purple distally, tubes shorter than throats, lobes 4 or 5, ± deltate (style-branch apices penicillate or truncate).
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Cypselae mostly obpyramidal, 4–5-angled, glabrous or sparsely to densely hairy;
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pappi persistent, of 5–12 entire or ± lacerate, sometimes aristate scales.
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glabrous or
sparsely densely hairy
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glabrous or
sparsely densely hairy
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reddish-brown
red proximally and yellow distally
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yellow-green proximally and yellowbrown punct brown or reddish-brown
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yellow-green proximally and yellowbrown punct brown or reddish-brown
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glabrous or
sparsely densely hairy
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