Una nueva especie de Ageratina (subg. Andinia, Eupatorieae, Compositae) y novedades taxonómicas en Ageratina gynoxoides (Wedd.) R.M.King & H.Rob

José Aguilar-Cano; Fabio Andrés Ávila

doi:10.18257/raccefyn.2562

Vol. 48 No. 188 (2024), Natural Sciences

Vol. 48 No. 188 (2024)

A new species of Ageratina (subg. Andinia, Eupatorieae, Compositae), and taxonomic novelties in Ageratina gynoxoides (Wedd.) R.M.King & H.Rob

Natural Sciences

https://doi.org/10.18257/raccefyn.2562

Published 2024-08-12

José Aguilar-Cano⁺⁻
Fabio Andrés Ávila⁺⁻

José Aguilar-Cano

Herbario JBB, Jardín Botánico de Bogotá “José Celestino Mutis”, Bogotá D.C., Colombia

Fabio Andrés Ávila

1 Herbario JBB, Jardín Botánico de Bogotá “José Celestino Mutis”, Bogotá D.C., Colombia 2 The Graduate Center, City University of New York, New York, USA

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How to Cite

Aguilar-Cano, J., & Ávila, F. A. (2024). A new species of Ageratina (subg. Andinia, Eupatorieae, Compositae), and taxonomic novelties in Ageratina gynoxoides (Wedd.) R.M.King & H.Rob. Revista De La Academia Colombiana De Ciencias Exactas, Físicas Y Naturales, 48(188), 537–550. https://doi.org/10.18257/raccefyn.2562

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Abstract

Two taxonomic novelties for the genus Ageratina Spach in the Colombian Eastern Cordillera are described and illustrated. First, Ageratina laurae is proposed as a new species restricted to the southwestern rural areas of Ciudad Bolívar and Usme’s administrative localities. Studying herbarium specimens, we found the new taxon resembled Ageratina gynoxoides (Wedd.) R.M.King & H.Rob, although it differs mainly by having leaves with arachnoid adpressed indument in the abaxial surface (vs. lanuginous-ferruginous indument), revolute margin (vs. flattened), and white predominantly glabrous corollas (vs. pink with dense indument). Second, we propose two varieties for A. gynoxoides based on its current geographic isolation, the differentiated density of the indument in the mid vein of leaves, and the density of glands in the corollas.

https://doi.org/10.18257/raccefyn.2562

Keywords

Asteraceae | Ciudad Bolívar | Flora of Bogotá | Usme

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References

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