Myoxanthus serripetalus (Kraenzl.) Luer 1982 SUBGENUS Myoxanthus SECTION Antennella Luer 1992

Photo courtesy of Weyman Bussey, plant grown by Petite Plaisance Orchids

Flower in Natural position

Flower closeup

Photo by Andreas Philipp


Drawing by Carl Luer


Common Name The Sawtooth-Edged Petal Myoxanthus

Flower Size .8" [2 cm]

Found in Peru and Ecuador on the rocky slopes of the eastern Andes at elevations of 1000 to 3100 meters as a small to large sized, cool to cold growing terrestrial or epiphyte with erect, stout ramicauls enveloped by 4 to 6 long, tuublar, hispidulous sheaths and carrying a single, erect, thickly coriaceous, narrowly ovate, acute, cuneate below into the subpetiolate base leaf that blooms in the spring, summer and fall on a short, arising from the apex of the ramicual, peduncles minutely pubescent, a fascile of successively single, few flowered inflorescence with inflated, longer than the ovary floral bracts.

" This is the largest and most distinctive species of Myoxanthus. The flowers are dark red to dark purple with the column yellowish, long sepals (up to 3 cm) densely covered adaxially by circular to subcircular warts. The petals are obovate at the base, abruptly contracted above the middle, forming a narrow, oblong to linear apex. The lip is ovate to trilobate with lateral lobes erect bellow the middle and margins serrate to fimbriate and apex verrucose; it has a subclavate column and fimbriate anther cap. The most similar species is M. oliviae, which is distinguished by brownish to yellowish flowers and sagittate petal apex." Gustavo Rojas-Alvarado, Mario A. Blanco, A. P. Karremans 2021

Synonyms *Pleurothallis serripetala Kraenzl. 1916

References W3 Tropicos, Kew Monocot list , IPNI ; Icones Pleurothallidinarum Vol IX Systematics of Myoxanthus Luer 1992 Native Ecuadorian Orchids Vol 3 Dodson 2002 photo fide; Orchid Species of Peru Zelenko Bermudez 2009 photo fide; AOS Bulletin Vol 86 # 11 2017 photo fide; 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