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| [A] Catasetum caquetense R.A.Calderón-Álvarez & M.Bonilla, [B] C. juruenense Hoehne. [C] C. tuberculatum Dodson. Photographs by R.A. Calderón-Álvarez (A), Juan Fernández (B), and M. Bonilla (C). in Álvarez et Morales, 2023. |
Abstract
A new species, Catasetum caquetense from the Caquetá department of the Colombian Amazonia, is described and illustrated. Catasetum caquetense is morphologically distinct from similar species such as C. tuberculatum in its rectangular, entire, denticulate, prominent apiculate basal callus surrounded by inconspicuous crown-shaped protrusions with an extra callus towards the apex that partially narrows towards the midlip. Information about its distribution, ecology, habitat, and taxonomic comments on morphologically similar species is also provided. With this addition, the genus comprises eight species in the department of Caquetá.
Keywords: Amazonia, Amazonía, Catasetum caquetense, Catasetum tuberculatum, orchid, orquídea, Caquetá
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| Comparison of morphologically similar species of Catasetum. A. Catasetum caquetense R.A.Calderón-Álvarez & M.Bonilla, B. C. juruenense Hoehne. C. C. tuberculatum Dodson. Photographs by R.A. Calderón-Álvarez (A), Juan Fernández (B), and M. Bonilla (C). |
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| Catasetum caquetense R.A.Calderón-Álvarez & M.Bonilla. A. General view of the plant habit without leaves, the inflorescence with male flowers. B. Male flower. C. Male flower side view. D. Perianth. E. Column with labellum longitudinally sectioned. F. Column without anther cap, frontal view. G. Anther cap in frontal, lateral, and dorsal views. H. Pollinarium, two views. Illustration by Marcela Morales-S. based on the holotype and isotype. |
Catasetum caquetense R.A.Calderón-Álvarez & M.Bonilla, sp. nov.
Diagnosis: Catasetum caquetense is morphologically similar to C. tuberculatum Dodson; however, it differs by the rectangular lip (vs. elliptical), with smooth to somewhat denticulate edges (vs. entire), the abaxial surface not entirely tuberculated (vs. fully tuberculated lip on the abaxial surface), and a prominent apiculate basal callus (vs. slightly prominent), which is encircled by minor crown-shaped protrusions, with an extra callus towards the apex that partially narrows towards the saccate mid-lip, a characteristic absent in C. tuberculatum.
Etymology: The specific epithet “caquetense” refers to the Caquetá Department in Colombia, which is the geographical location where the species was discovered.
R. Alexis Calderón Álvarez and Miguel M. Bonilla Morales. 2023. A New Species of Catasetum (Cymbidieae: Catasetinae) from the Colombian Amazonia. LANKESTERIANA. 23(3); 469–475.
Resumen. Se describe e ilustra una nueva especie, Catasetum caquetense del departamento del Caquetá amazonia colombiana. Catasetum caquetense difiere de especies morfológicamente similares como C. tuberculatum por el callo basal rectangular, entero, denticulado, prominentemente apiculado, rodeado de protuberancias inconspicuas en forma de corona con un callo extra hacia el ápice que se estrecha parcialmente hacia el labelo. Además, se proporciona información sobre su distribución, ecología, hábitat y comentarios taxonómicos sobre especies morfológicamente similares. Con esta adición, el género comprende ocho especies en el departamento del Caquetá.
