Vernonia Schreber (Q3225)
Vernonia is a taxon with the rank genus within the tribe Vernonieae
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Vernonia Schreber
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Vernonia is a taxon with the rank genus within the tribe Vernonieae
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Statements
taxon/id/Vernonia Schreber
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Vernonia Schreber
Vernonia
Schreber
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
accepted
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Leaves usually mostly cauline (rarely mostly basal or basal and cauline);
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sessile or petiolate;
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blades ovate, elliptic, lanceolate, oblanceolate, spatulate, linear, or filiform, bases usually ± cuneate (rounded-truncate in V. pulchella), margins usually toothed (rarely entire), apices acute to attenuate, abaxial faces usually ± scabrellous to strigillose or tomentose to pannose, sometimes glabrate or glabrous, usually resin-gland-dotted (sometimes ± pitted), adaxial faces ± scabrellous or glabrate, sometimes resin-gland-dotted (rarely pitted).
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Heads discoid, ± pedunculate, not subtended by foliaceous bracts, (6–) 40–100+ in ± corymbiform to paniculiform arrays (6–) 10–25+ cm diam.
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Involucres ± campanulate to obconic or hemispheric, 3–8 (–11+) mm diam.
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Phyllaries 18–70+ in 4–7+ series, the outer ovate to lanceolate or subulate, inner ± lanceolate to oblong, all ± chartaceous, margins entire, often ciliolate, tips rounded (then sometimes apiculate), or acuminate, subulate, or filiform, faces glabrous or sparsely strigillose to tomentose, sometimes ± gland-dotted.
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Florets 9–30 (–65+);
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corollas usually purplish or pink (rarely white), tubes longer than funnelform throats, lobes 5, lance-linear, ± equal.
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Cypselae ± columnar, sometimes arcuate, 8–10-ribbed, glabrous or ± strigillose to hirtellous, often resin-gland-dotted;
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pappi persistent, of 20–30+ outer, erose to subulate scales or bristles plus 20–40+ inner, longer, subulate to setiform scales or bristles.
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scabrellous
usually more or less
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less campanulate
obconic or hemispheric
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sparsely strigillose
tomentose
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gland-dotted
sometimes more or less
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more or less strigillose
hirtellous
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