Myoxanthus simplicicaulis (C.Schweinf.) Luer 1982 SUBGENUS Myoxanthus SECTION Antennella Luer 1992

Plant and Flower

Photos by Linda & Mikael Karlbom,


Drawing by Carl Luer


Common Name The Simple Stemmed Myoxanthus

Flower Size .15" [3 mm]

Found in Venezuela and Guyana in montane forests and on tepuis at elevations of 800 to 1900 meters as a small to just medium sized, warm to cool growing epiphyte with erect, slender ramicauls enveloped basally by 4 to 5, long, tubular, hispidulous sheaths and carrying a single, apical, erect, coriaceous, narrowly ovate, acute, narrowly cuneate below into the subpetiolate base leaf that blooms in the winter through summer on a succession of single flowered inflorescence arising from a dense mass of old nodes and peduncles at the apex of the ramicaul with infundibular, minutely pubebescent, as long as the pedicel floral bracts.

"Distinguished by the strictly caespitose habit with slender ramicuals and narrow leaves. Although superficially similar to Myoxanthus scandens , the small flowers are disinguished by the minutely pubescent sepals and petals with a more acutely defined, thick, apical segment, The lips of both species are similar." LUer 1992

Synonyms *Pleurothallis scandens var. simplicicaulis C.Schweinf.1962; Pleurothallis simplicicaulis (C.Schweinf.) Luer 1977

References W3 Tropicos, Kew Monocot list , IPNI ; Flora de Venezuela Volumen 15 Parte 2 Foldats 1970 as Pleurothallis scandens var simplicaulis drawing ok; Icones Pleurothallidinarum Vol IX Systematics of Myoxanthus Luer 1992 Orchids of Venezuela [An illustrated field guide] Vol. 2 Ramiro and Carnevali 2000 drawing fide; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003; Pleurothallids Neotropical Jewels Vol 1 Karremans & Viera 2020 photo fide; A taxonomic synopsis and morphological characterization of Myoxanthus (Orchidaceae: Pleurothallidinae) Gustavo Rojas-Alvarado, Mario A. Blanco, A. P. Karremans 2021 Photo fide