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Issue: Vol. 622 No. 2: 25 Oct. 2023
Type: Article
Published: 2023-10-25
DOI: 10.11646/phytotaxa.622.2.5
Page range: 155-164
Abstract views: 517
PDF downloaded: 13

Myoxanthus anancusiensis (Orchidaceae: Pleurothallidinae), a new species from the inter-Andean valley of Huancavelica, Peru

Escuela de Ingeniería Ambiental; Facultad de Ingeniería; Universidad Continental; Huancayo; Perú.
Programa de Investigación de Ecología y Biodiversidad; Asociación ANDINUS; Calle Miguel Grau 370; Sicaya; Huancayo; Junín; Perú. Facultad de Ciencias de la Salud; Universidad Continental; Huancayo; Perú.
Laboratory of Systematics of Vascular Plants; Postgraduate Program in Botany; Universidade Federal do Rio Grande do Sul; Porto Alegre 91509-900; RS; Brazil.
Laboratory of Systematics of Vascular Plants; Postgraduate Program in Botany; Universidade Federal do Rio Grande do Sul; Porto Alegre 91509-900; RS; Brazil.
Andean orchids Peruvian central Andes terrestrial Monocots

Abstract

We report a new species of Myoxanthus from Huancavelica, Peru. Myoxanthus anancusiensis is described, illustrated, and compared with its similar species M. serripetalus and M. oliviae. We carried out a systematic review of the herbarium information of Myoxanthus species reported for Peru and compared the morphological characteristics of similar species, to rule out overlooking already described taxa. The new species is characterized by being a medium-sized plant with a terrestrial habit that grows at an elevation of 2800 m. The flower is cherry-red in color with slightly yellow striations. The sepals present a smooth adaxial surface, and the petals are oblong-caudate with entire margin. The labellum is oblong-elliptic and fimbriate with lateral lobes erect. The new species represents an important record for the flora of the inter-Andean valleys of central Peru in the department of Huancavelica and suggests that carrying out more expeditions in this type of ecosystem is desirable.

 

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