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| Pleurothallis mark-wilsonii J.S.Moreno, Gal-Tar & Sierra-Ariza, in Moreno, Sierra-Ariza, Hoyos & Galindo-Tarazona. 2022. |
Abstract
A new species of Pleurothallis from the Western Andes of Colombia is described and illustrated. The new species belongs to subsection Acroniae of the series Amphigyae, morphologically resembles Pleurothallis amphigya, but differs mainly by the ovate-lanceolate lip, with two divergent, elongate keels, located at the base up to about the middle of the lip (vs. triangular trilobed, the disc with a developed glenion at the base).
Keywords: San José del salado, Taxonomy, Systematics, Pleurothallis, Western Andes, Amphigyae, Acroniae, Acronia, Monocots
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| Pleurothallis mark-wilsonii J.S.Moreno, Gal-Tar & Sierra-Ariza. A. Habit. B. Flower. C. Dissected perianth. D. Column and lip, lateral view and longitudinal section of the column. E. front and side view of lip. F. Column, ventral and side view. Anther cap and pollinia. LCDP by J.S. Moreno based on the holotype. |
Pleurothallis mark-wilsonii J.S.Moreno, Gal-Tar & Sierra-Ariza, sp. nov.
Pleurothallis mark-wilsonii is most similar to P. amphigya Luer & Escobar (1981: 128) but could be distinguished its petals oblong-lanceolate, revolute and strongly acuminate (vs. elliptical-ovate or subsigmoid, oblique and slightly acuminate) and the lip ovate-lanceolate, with two diverging keels, elongated, located at the base to near the middle of the lip (vs. triangular trilobed, the disc with a developed glenion at the base).
Etymology:—Named after Mark Wilson from the Colorado College in USA. A friend and an arduous researcher of the genus Pleurothallis. His contributions have provided valuable information to solve several taxonomic difficulties within the genus (Figure 3)
Juan Sebastian Moreno, Mario Alexei Sierra-Ariza, David Hoyos, Robinson Galindo-Tarazona. 2022. Pleurothallis mark-wilsonii A New Species from the subsection Acroniae series Amphigyae from the Western Andes of Colombia. Phytotaxa. 568(3); 283-288. DOI: 10.11646/phytotaxa.568.3.5
