Synonyms: Acianthera floribunda; Acianthera longicaulis; Acianthera sieberi; Arthrosia capillaris (homotypic); Arthrosia floribunda; Arthrosia longicaulis; Humboldtia capillaris; Humboldtia longicaulis; Humboltia capillaris (homotypic); Humboltia longicaulis; Pleurothallis capillaris (homotypic); Pleurothallis floribunda (heterotypic); Pleurothallis longicaulis; Pleurothallis sieberi; Pleurothallis triquetra (heterotypic); Specklinia capillaris (homotypic); Specklinia floribunda; Specklinia longicaulis; Specklinia ophioglossoides