Myoxanthus exasperatus (Lindl.) Luer (1982a: 36)

Rojas-Alvarado, Gustavo, Blanco, Mario A. & Karremans, Adam P., 2021, A taxonomic synopsis and morphological characterization of Myoxanthus (Orchidaceae: Pleurothallidinae), Phytotaxa 507 (3), pp. 211-258 : 236

publication ID	https://doi.org/ 10.11646/phytotaxa.507.3.1
persistent identifier	https://treatment.plazi.org/id/0E3EF64D-FFBE-850D-FF26-FED0FCF3FCDC
treatment provided by	Marcus
scientific name	Myoxanthus exasperatus (Lindl.) Luer (1982a: 36)
status

Treatment

16. Myoxanthus exasperatus (Lindl.) Luer (1982a: 36) View in CoL . (Fig. 14E)

Basionym: Pleurothallis exasperata Lindley (1859: 15) View in CoL .

Homotypic synonym: Humboltia exasperata (Lindl.) Kuntze (1891: 667) View in CoL , as “ Humboldtia View in CoL ”.

TYPE:— VENEZUELA. Aragua: near Colonia Továr, Fendler 1490 (holotype: K!; isotype: K!; GH!) .

Heterotypic synonym.: Pleurothallis speciosa Luer (1977: 392–393) . Myoxanthus speciosus (Luer) Luer (1982: 51) .

TYPE:— PANAMA. Chiriquí: epiphytic in cloud forest above Guadalupe , ca. 2000 m, 13 Sep 1976, flowered in cultivation 5 Feb 1977, Luer & Butcher 1371 (holotype: SEL!).

Distribution: — Guatemala, El Salvador, Costa Rica, Panama, Colombia, Venezuela and Peru.

Notes:— Myoxanthus exasperatus was recently found to apply to what had been previously known as M. speciosus ( Rojas-Alvarado & Karremans 2020, also see commentary under M. parahybunensis ). This species is easily distinguished by its caespitose habit, fully hispidulous sheaths, the ramicaul and narrow ovate leaves frequently purple suffused, flowers yellowish striped with red-purple, a column without teeth and an oblong purple-suffused lip with two longitudinal, rounded calli from the base to above the middle.