Halleorchis is a genus of terrestrial orchids containing only one species, Halleorchis aspidogynoides, which is an endangered species native to Central Africa.
H. aspidogynoides is known only from two populations: one at Belinga in Gabon, and one at Lolodorf in Cameroon. A 2017 assessment for the IUCN Red List of Threatened Species estimated the total area of occupancy of this species to be . It grows at the base of damp rocks in humid forests at altitudes of .[1]
H. aspidogynoides is a terrestrial herb. The stem is erect and grows to long. The leaves are ovate-lanceolate, measuring long and wide. The scape grows to long. The inflorescence is a spike that carries 50-60 delicate pink flowers.[1]
H. aspidogynoides is listed as endangered by the International Union for Conservation of Nature under criteria B2ab(iii), based on its area of occupancy and the small number of locations at which this species is present. The two known populations of H. aspidogynoides occur in unprotected areas and are at risk of human disturbance. The main threat to the population in Gabon is mining, while the population in Cameroon is threatened by urbanization, agriculture (particularly cocoa farming), and logging.