Solidago Linnaeus (Q2290)
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Solidago is a taxon with the rank genus within the tribe Astereae
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Solidago Linnaeus
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Solidago is a taxon with the rank genus within the tribe Astereae
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Statements
taxon/id/Solidago Linnaeus
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Solidago Linnaeus
Solidago
Linnaeus
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
accepted
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woody caudices or rhizomes.
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Stems decumbent to ascending or erect, sometimes branched distally, glabrous or strigose, strigillose, hispid, or short-villous.
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petiolate (proximal) or sessile (proximal and distal, latter sometimes subpetiolate);
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proximal blades sometimes 3-nerved, ovate-oblanceolate, margins often serrate, faces glabrous or densely hairy;
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distal sometimes 3-nerved, glabrous or sparsely to densely scabrous, strigillose, or villous, sometimes stipitate-glandular, sometimes resinous.
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Heads usually radiate, sometimes discoid, (1–) 2–1500+ in racemiform (club-shaped or pyramidal), paniculiform or corymbo-paniculiform, sometimes secund arrays.
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Involucres campanulate to cylindric (often spreading upon drying), 3–12 × 1.7–10 mm.
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Phyllaries 10–35 in 3–5 series, midnerves usually ± swollen and translucent, sometimes plus 2–5 secondary nerves (striate, flat), linear-lanceolate to oblong or ovate, unequal to rarely subequal, margins scarious, (apices rounded to acute or attenuate), faces glabrous or sparsely pilose or puberulent, sometimes minutely stipitate-glandular, sometimes resinous.
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Receptacles slightly convex, pitted, epaleate.
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Ray-florets (0–) 2–15 (–24), pistillate, fertile;
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corollas yellow, rarely white (usually glabrous).
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Disc-florets 2–35 (–60), bisexual, fertile;
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corollas yellow, ± ampliate, tubes shorter than throats (usually glabrous), lobes 5, erect to spreading, triangular to narrowly lanceolate;
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style-branch appendages broadly to narrowly triangular (lengths 0.7–1 times stigmatic lines).
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Cypselae narrowly obconic to cylindric, sometimes somewhat compressed, ribs usually 8–10 (either darker and sometimes translucent or lighter than bodies), glabrous or moderately strigillose;
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pappi persistent, outer setiform scales (0.25–0.5 mm; rarely present) plus 2 series of 25–45 longer, barbellate bristles, mid apically attenuate, 90–95% length of inner, inner apically weakly to strongly clavate [(0.5–in S. sphacelata) 1.5–5 (–7.3) mm].
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decumbent
ascending or erect
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glabrous or
sparsely densely scabrous strigillose or villous
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glabrous or
sparsely densely scabrous strigillose or villous
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glabrous or
sparsely densely scabrous strigillose or villous
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stipitate-glandular
sometimes
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stipitate-glandular
sometimes minutely
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compressed
sometimes somewhat
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