Aphyllorchis yachangensis, a new holomycotrophic orchid from Guangxi, southern China is described and illustrated here. This new species is similar to A. caudata but differs from the latter mainly by the sepals acute at the apex, the hypochile with 2 smaller and semicircular wings, the epichile adaxially smooth, acute, the lateral lobes triangular-ovate and the column clavate.
Keywords: Aphyllorchis; Guangxi Province; new taxa; saprophytic Orchidaceae; taxonomy.
Ying Qin, Hailing Chen, Zhenhai Deng, Yan Liu.