Oeceoclades perrieri is an orchid that is native to the country bordered by what to the east?
Oeceoclades perrieri Oeceoclades perrieri is a terrestrial orchid species in the genus "Oeceoclades" that is native to Mozambique and northwestern Madagascar. It was first described by the German botanist Rudolf Schlechter in 1913 as "Eulophia ambongensis". Schlechter had also described a separate species, "Eulophidium ambongense" in the same 1913 work. When Leslie Andrew Garay and Peter Taylor resurrected and revised the genus "Oeceoclades" in 1976, these two taxa caused a naming conflict, so they chose to use "Eulophidium ambongense" as the basionym for "O. ambongensis" and reduced "Eulophia ambongensis" to a synonym of "O. perrieri", which was based on the basionym "Eulophidium perrieri" that Schlechter had also described later in 1925. Both "Eulophidium perrieri" and "Eulophia ambongensis" were conspecific, belonging to the same species, so Garay and Taylor were free to use the later name as the base for their new combination when transferring taxa to "Oeceoclades". Garay and Taylor noted that this species is related to "O. quadriloba", "O. sclerophylla", and "O. analavelensis" but can be distinguished from them by its characteristic long strap-like leaves that taper to a point.
Oeceoclades calcarata Oeceoclades calcarata is a terrestrial orchid species in the genus "Oeceoclades" that is endemic to Madagascar. It was first described by the British botanist Robert Allen Rolfe in 1905 as "Eulophia paniculata". The German botanist Rudolf Schlechter later described this species as "Cymbidium calcaratum" in 1915 and then transferred his own taxon to the genus "Eulophia" (as "E. calcarata") in 1925. When Leslie Andrew Garay and Peter Taylor revised the genus "Oeceoclades" in 1976, they transferred this species to the expanded "Oeceoclades" as "O. calcarata" because even though "Eulophia paniculata" was the older name and thus had priority, there had already been an earlier species named "Oeceoclades paniculata" (so named by John Lindley and now recognized as a species in the genus "Robiquetia") that prevented using that specific epithet.