Synonyms: Acronia archidiaconi; Acronia bivalvis (homotypic); Humboldtia bivalvis; Humboldtia cardium; Humboltia bivalvis (homotypic); Humboltia cardium; Pleurothallis angusta; Pleurothallis antonensis; Pleurothallis archidiaconi; Pleurothallis cardiantha; Pleurothallis cardium; Pleurothallis chanchamayoensis; Pleurothallis fuscata; Pleurothallis harlingii; Pleurothallis ignivomi; Pleurothallis lansbergiana; Pleurothallis lansbergii; Pleurothallis lilianae; Pleurothallis lilianiae; Pleurothallis phaeantha; Pleurothallis pichinchae (heterotypic); Pleurothallis sigsigensis; Pleurothallis stenocardium; Zosterophyllanthos antonensis; Zosterophyllanthos archidiaconi; Zosterophyllanthos bivalvis (homotypic); Zosterophyllanthos ignivomi; Zosterophyllanthos lilianae; Zosterophyllanthos lilianae ak; Zosterophyllanthos lilianiae