Oeceoclades flavescens is a terrestrial orchid species in the genus Oeceoclades that is endemic to northeastern Madagascar.[1] It was first described by the French botanists Jean Marie Bosser and Philippe Morat in 2001. The type specimen was collected in 1954 from the wet undergrowth of a coastal forest near Maroantsetra; it is the only known collection of this species. The specific epithet flavescens refers to the pale yellow flowers.[2]
The conical pseudobulbs are 1.5cm-3cmcm (00.6inches-01inchescm) high and heteroblastic (derived from a single internode). The oblong to narrowly lanceolate leaves are 15- long by 2- wide, taper to a point, and have three to five primary longitudinal veins. There is a single papery leaf on each pseudobulb with a 10- long petiole with a joint about 6cm (02inches) below the leaf blade. Inflorescences are 40- long, of which 30- of that length is the peduncle. The inflorescence is a simple raceme with only 10 to 12 pale yellow flowers with purple streaks on the labellum. The sepals are 9- long by 2- wide and petals are 8- long by 3mm wide. The four lobes of the labellum are rounded and the spur is forward-projecting.
Oeceoclades flavescens is similar to O. pulchra but it is very distinctive in the papery leaves and the morphology of the labellum.