Open Access A new species of Philodendron (Araceae)

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Abstract:

Philodendron geniculatum is described as a species new to science and illustrated. This species has been in cultivation for decades in the USA, Europe and Asia (Taiwan), but has not flowered until recently. It is characterised by a conspicuous geniculum on the apex of the subterete petiole, by an elliptic leaf blade with a thick, whitish midrib, many parallel primary lateral veins on each side, an auriculate base and a cuspidate apex, as well as by persistent red cataphylls drying brown soon and becoming fibrous later. P. geniculatum has a single inflorescence with a striking spathe, outside burgundy-red in the lower part and intensively red in the upper part. The species is morphologically closest and probably related to P. scherberichii, from which we delimit it.

Keywords: AROIDS; BOTANICAL GARDEN; COLOMBIA; PHILODENDRON GENICULATUM; PHILODENDRON SCHERBERICHII; TAXONOMY

Document Type: Research Article

DOI: http://dx.doi.org/10.3372/wi.42.42212

Publication date: December 17, 2012

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  • Willdenowia is an international peer-reviewed journal publishing original research papers in English from the entire fields of plant, algal and fungal systematics, covering the evolution, taxonomy and nomenclature of these organisms as well as related fields such as floristics and plant geography. Three issues appear each year (in April, August and December) in an open-access online edition and a print edition. Individual papers may be published in the online edition as fast-track articles ahead of inclusion in these issues.

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