The Taxonomic Significance of ducts in the corolla lobes of Vernonia (Vernonieae: Asteraceae)

The multiple longitudinal ducts in the corolla lobes found in the closely related genera Vernonia, Vernonanthura and Trepadonia are microscopically studied and illustrated. The lack of such ducts in the two South American species that have until now been retained in Vernonia indicates that they shou...

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Veröffentlicht in:PhytoKeys 2016-01, Vol.58 (58), p.1-7
Hauptverfasser: Robinson, Harold, Yankowski, Stanley
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description The multiple longitudinal ducts in the corolla lobes found in the closely related genera Vernonia, Vernonanthura and Trepadonia are microscopically studied and illustrated. The lack of such ducts in the two South American species that have until now been retained in Vernonia indicates that they should probably be excluded from the genus.
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subjects Asteraceae
corolla lobes
Ducts
Flowers
Genera
Identification and classification
Physiological aspects
Taxonomic significance
Trepadonia
Vernonanthura
Vernonia
title The Taxonomic Significance of ducts in the corolla lobes of Vernonia (Vernonieae: Asteraceae)
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