Difference between revisions of "Erechtites Rafinesque (Q2883)"
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Latest revision as of 12:50, 24 June 2022
Erechtites is a taxon with the rank genus within the tribe Senecioneae
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Erechtites Rafinesque
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Erechtites is a taxon with the rank genus within the tribe Senecioneae
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Statements
taxon/id/Erechtites Rafinesque
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Erechtites Rafinesque
Erechtites
Rafinesque
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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Stems usually 1, usually erect.
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petiolate or sessile;
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blades pinnately nerved, mostly ovate to lanceolate (sometimes pinnately lobed or dissected), ultimate margins entire, denticulate, or toothed, faces glabrous or ± tomentose or villous (often unevenly glabrescent).
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Heads disciform, in cymiform or corymbiform arrays.
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Calyculi of 1–6 [–12+] bractlets.
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Involucres urceolate or cylindric to turbinate, 2–10+ mm diam.
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Phyllaries persistent, usually (5), 8, 13, or 21 in 1–2 series, erect (sometimes reflexed in fruit), distinct (margins ± interlocking), lanceolate to linear, equal, margins ± scarious (tips green or with minute dark spots).
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Receptacles flat to convex, ± foveolate or smooth, epaleate.
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Peripheral (pistillate) florets 10–100+ (in 1–3+ series), corollas whitish to pale-yellow, tubular-filiform, lobes 4–5, deltate, erect.
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Disc-florets (3–) 10–20 (–50+), mostly bisexual and fertile, inner sometimes functionally staminate;
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corollas whitish to pale-yellow [pinkish], tubes longer than funnelform throats, lobes 4–5, erect to spreading, lanceovate;
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style-branches stigmatic in 2 lines, apices truncate-penicillate.
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Cypselae (stramineous to brown or purple) ± prismatic and 5-angled or ribbed or ± obovoid to ± fusiform and 10–20-nerved, glabrous or puberulent (on or between ribs or nerves);
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pappi readily falling, of 60–120, white [reddish], barbellulate bristles.
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ribbed or more or less obovoid
more or less fusiform
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