Myoxanthus ortizianus Kolan. & Szlach. 2014 SUBGENUS Myoxanthus SECTION Antennella Luer 1992

Photo by B. Coral Jaramillo and A taxonomic synopsis and morphological characterization of Myoxanthus (Orchidaceae: Pleurothallidinae) Gustavo Rojas-Alvarado, Mario A. Blanco, A. P. Karremans 2021

Another Angle

Photo by Saul Altamirano A. and The Parque Nacional Carrasco, Cochabamba Bolivia, Orquideas del Proyecto Hidroelectrico Ivirizu Website

TYPE Drawing

Photo by Kolanowska and Szachetko and Biodiv. Res. Conserv. 36: 7-10, 2014 Myoxanthus ortizianus (Orchidaceae), a new species from southern Colombia Website

Common Name Ortiz' Myoxanthus [Padre Pedro Ortiz Valdivieso, Catholic monk, orchid researcher and good friend died 2012]

Flower Size .28" [7 mm]

Found originally in Putumayo department of Colombia and now in Cochabamba department of Bolivia in very humid montane forests at elevations around 2200 meters as a medium sized, cold growing, caespitose epiphyte with a stout, erect, ramicaul enclosed by a few tubular sheaths the basal part sparsely covered with black hairs and carrying a single, erect, coriaceous, linear-lanceolate, acute, subpetiolate base leaf that blooms in the winter on a fascicle of 2 to 5 simultaneously opening flowers enclosed by thin sheaths with shorter than the pedicel floral bracts.

"Based on the caespitose habit of the new species, the scruffy sheaths of the ramicaul and flowers produced laterally, simultaneously from near the apex of the ramicaul, this species belongs to the nominal section of the subgenus Myoxanthus. The flowers of M. ortizianus slightly resemble those of M. ceratothallis , which is widely distributed throughout South America, as well as Myoxanthus priapus , which is known from Ecuador and Peru. Both of these species belong to the section Antenella. M. ortizianus is easily separable from these species by the oblong-ovate lip, with its lower part characterized by the presence of erect, rounded sides, and with an oblong, obtuse apical part. The new species also differs from M. ceratothallis in terms of the absence of a pair of teeth near the middle of the petals and on the gynostemium, as well as by virtue of the obliquely ovate lateral sepals (vs lateral semi-orbicular sepals). The new species may be easily distinguished from M. priapus by its much longer pedicels (up to .6" [15 mm] vs .08" [2 mm]) and ovaries (.24" [6 mm] vs .06" [1.5 mm ]long) as well as by its short connate sepals." Kolan. & Szlach. 2014

The second photo above was taken of a plant in situ in Cochabamba department of Bolivia being a first record of the species outside Colombia! It matches quite well the photo in Pleurothallids, Neotropical jewels Karremans & Viera-Uribe taken in Colombia.

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; * Biodivers. Res. Conservation 36: 8 - Myoxanthus ortizianus Orchidaceae a new species from southern Colombia Kolan. & Szlach 2014 drawing fide;

Pleurothallids Neotropical Jewels Vol 1 Karremans & Viera 2020 photo fide; The Parque Nacional Carrasco, Cochabamba Bolivia, Orquideas del Proyecto Hidroelectrico Ivirizu Website 2021 photo fide; A taxonomic synopsis and morphological characterization of Myoxanthus (Orchidaceae: Pleurothallidinae) Gustavo Rojas-Alvarado, Mario A. Blanco, A. P. Karremans 2021 Photo fide

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